Obrazy na stronie


CHEMICAL NEWS, The Institute of Chemistry.

March 7, 1879. lighting is consequently entirely obviated. Not only this, , attraction by a magnet. The portion separated was again but one, two, three, or the whole of the four candles may reduced to powder, and the magnetic portion again be lighted or extinguished at will simply by turning the separated, and so on till no non-magnetic residue remained. handle of the commutator, or if one goes out it re-lights The magnetic portions all had almost the same specific itself automatically without extinguishing its neighbours. gravity, and after deduction of a silicate of ferroso-ferric

It would, of course, be premature to speak of the oxide, Fez04.2SiO2, the residue was found to approach cost of permanently carrying out this immense boon to the composition of a spinel, composed of an oxide of the students and literary men generally; we may, however, formula M203. MO. This residue was magnetic, when mention that a reduction has recently been made in the iron constituted either one or other of the oxides, the reprice of the ordinary ninety-minute candles of something maining oxide consisting of alumina or lime. Mr. like 40 per cent. That the innovation is already highly Hannay's conclusion, therefore, is that such a mixed appreciated is shown by the large attendance of real oxide, or spinel, may possess magnetic properties when workers on the three evenings in question, and by the associated with magnetic silicate of ferroso-ferric oxide. almost unanimous chorus of approbation indulged in by readers of all classes. The Société d'Electricité deserves great credit for the public spirit they have shown in gratuitously supplying everything necessary for making EDINBURGH UNIVERSITY CHEMICAL Society this interesting experiment.

February 12, 1879. Mr. Bond and his able coadjutors seem determined to extend the use of the treasures under their charge in every Mr. GEORGE MACGOWAN, F.R.S.E., in the Chair. possible direction, and it ought to be the duty as well as the pleasure of the literary, artistic, and scientific press of A PAPER was read by Dr. W. INGLIS CLARK On the this country to strengthen their hands by generously com. Action of Chlorinated Substances on Alcohol,” in which mending and seconding their well-intentioned efforts.

he described the pradical method of preparing chloroform, and the chemical reactions which most probably occur in its formation.



Ordinary Meeting, February 10, 1879.

To the Editor of the Chemical News.
Mr. J. J. COLEMAN in the Chair.

SIR,-When the Institute of Chemistry was first proposed

the promoters gave great offence by holding hole-and. The first paper was read by Dr. John CLARK, On the corner meetings of their personal friends, instead of inAction of Phosphuretted Hydrogen on the Animal Or. serting an advertisement in your columns asking all proganism." His experiments were carried out in conjunc-fessional chemists to meet together and discuss their tion with Dr. Henderson. Small animals, usually rats, mutual wants with a view of forming an association. were introduced into the jar. There appeared to be con- Whatever excuse there might have been at that time siderable difficulty in breathing, and itchiness of the skin. for such a course of procedure, it is surely unnecessary Death took place usually within half an hour. A very and undesirable to continue the same system. small amount of gas has a fatal action; even i part in Throughout the year 1878 the Menibers of the Institute 5000 causes death. The blood was dark and venous, and the heard of absolutely nothing being done by the Council to lungs inflamed. Portions of the liver and blood were tested advance the interests of the profession, until in December for phosphorus compounds by introducing them into a -just before the new subscriptions fell due-the Institute flask in which hydrogen was being evolved from zinc and showed a faint sign of life, and a meeting was held, at hydrochloric acid. The flame of the hydrogen had a green which the important subject of “ Trade Certificates " was colour, and exhibited a spectrum of green bands, charac. discussed. teristic of phosphorus.

This seemed a step in the right direction, and we looked Mr. Tarlock read the second paper, On Magnetic forward anxiously for a verbatim report of the proceedings. Iron Sand from the Kyles of Bute." This sand forms With a large number of Members scattered all over the black streaks on the Argyleshire shore. It is separable kingdom, and with ample funds for the purpose, our into two portions by the magnet, both of which have the Council surely could not have contemplated anything less. same appearance and crystalline form ; one is magnetic, Judge then of the disgust of myself and other sub. and the other not. On analysis the magnetic portion scribers when it leaked out that the executive dared not was found to contain 83-55 per cent of Fez04 and 15:6 per publish a report of the meeting because nearly all the cent of Fe2O3; and the non-magnetic portion contained speakers upheld the system of giving certificates for 0:67 per cent of Fe3O4, and 97:64 per cent of Fe2O3. If advertising purposes. They were expected to curse, but the magnetic variety had been oxidised to the non- verily they blessed them altogether. But why should the magnetic variety no disintegration of the crystal had discussion not be published ? Have the executive taken place.

discovered that they have been cherishing a snake ? Are The last paper was read by Mr. J. B. Hannay. The some of the worst sinners to be numbered amongst the subject was, Variation in the Magnetic Constituents of very elect, i.e., the Council of the Institute of Chemistry Minerals.It has been observed that many rocks are of Great Britain and Ireland ? feebly magnetic. The author's method of determining Now, Sir, I protest against this hole-and-corner business. the amount of this magnetic attraction has been else. Every Fellow of the Institute has a right to know all that where described. It consists of suspending a sample of occurs at the public meetings of his society, and the the rock to the beam of a balance, and determining the attempt to prevent publicity of discreditable proceedings amount of oscillation produced by a magnet placed above will, ir persisted in, speedily prove the ruin of the the pan. The magnetic constituents of these rocks, con- Institute. prising specimens of pyrochlor-obsidian, natrolite, rhodo- In a few days' time a second conference will be held, nite, and gneiss, were separated by pulverisation and at which the subject of the “Adulteration of Food and


March 7, 1879.
Chemical Notices from Foreign Sources.

103 Drugs" will be discussed. While deprecating the choice , to add one or two remarks which I omitted on the occasion of Dr. Voelcker as the leader of the discussion-for, referred to. eminent as he is in his own department, his opinions I drew attention to the fact that Prof. Dittmar had very command no respect among those chemists who have had carefully described the details of a method of burning special experience in the examination of food and drugs water residues in the Chemical News about a year ago. -it is to be hoped that his speech and that of all others I stated that, having tried this method upon some ten or who take part in the debate will be fully reported and twelve waters, I had found it yield very accurate results. circulated among the Members.

These waters contained exceedingly small quantities of As the Council of the Institute allowed the year 1878 to any solid constituents, and especially little organic pass without moving a finger to advance the interests of matters. I described then the process as I had used it, The profession, and as there are ample funds in hand, I saying that the nitrogen was burned with soda-lime in a had hoped they would have had the discretion not to current of hydrogen. Will you allow me to add that the make any call for 1879. As it is, I shall wait to see what ammonia, instead of being collected in acid, was absorbed the “Government Programme" is before I pay my subscrip- by pure distilled water, and with perfect condensation. tion, and I hope the other Members will do the same. Prof. Dittmar mentions the constant presence of ammonia In short, I challenge the Council to show what they l in mineral acids, and I experienced a serious difficulty in intend to do with the money now in hand.-I am, &c., attempts to prepare acids which, after neutralisation with A Disgusted PROMOTER.

pure sodic carbonate, would not give a strong colouration with the Nessler test.

The soda-lime used, both to absorb the carbon dioxide THE BESSEMER PROCESS FOR TREATING

and to burn the organic matter for nitrogen, was prepared SULPHIDES.

from pure soda and ignited marble. It was finely pounded,

and passed through one sieve on to a finer one, so as to To the Editor of the Chemical News.

free ihe material from dust, and at the same time reniove in the CHEMICAL News, vol. xxxix., p. 94, that " The ments of all those who have only an occasional need of SIR, -- With reference to the remarks on my experiments all pieces larger than a pin's head.

I believe this combustion process will satisfy the require. analyses made seem to show that in the regulus obtained such a method of analysis.- I am, &c., there is often much less sulphur than corresponds to the

W. N. HARTLEY. formula FeS-a fact that points to a lower sulphide of King's College, March 4, 1879. iron than any hitherto recognised," Is it not possible the excess of iron present may be accounted for in another way propose making the following experiment in a Bessemer CHEMICAL NOTICES FROM FOREIGN provided with a lime lining, viz.-To Bessemerise FeS with a hot blast and without adding silica, and I expect

SOURCES. (provided the temperature is sufficiently high) that the protoxide of iron formed will read on the protosulphide Note.-All degrees of temperature are Centigrade, unless otherwis of iron and produce metallic iion with the evolution of

expressed. sulphurous acid.-1 am, &c.,


Comptes Rendus Hebdomadaires des Séances, l'Académie de 7, Jeffrey's Square, St. Mary Axe, London, E.c.,

des Sciences. No. 5, February 3, 1879. March 1, 1878.

Remarks on the Third Reply of M. Pasteur.-M.

Berthelot.-A continuation of a stale and unprofitable ALUM IN FLOUR AND BREAD.


Fermentation of Cellulose.-P. Van Tieghem.-It To the Editor of the Chemical News.

does not seem that there is a diastase of cellulose formed SIR, -Mr. Penney, in his article on " Alum in Flour and in excess by amylo-bacteria and acting at a distance from Bread" (CHEMICAL News, vol. xxxix., p. 80) remarks that the it. Microscopic observations show that the solvent a&ion logwood test for alum is to be thoroughly relied on as a of the amylo-bacteria upon cellulose is produced by direct qualitative test is properly applied, and that it is of little contact. If the hypothesis of a diastase naturally offers consequence whether the solution is old or new. In this itself to the mind to explain the first stage of the fermenconclusion I quite agree with him, and I wish to point tation of cellulose and in general of the insoluble matters out a reason for its sometimes failing.

produced by living beings it must be recognised as not I have noticed that if the mixture of logwood and readily verifiable. carbonate of ammonia solutions is allowed to stand a Liquefaction of Silicide of Hydrogen.-M. Ogier. short time before applying it to the flour or bread con- | –The author has performed this experiment with the taining alum, it imparts a dirty brown colour, and some- apparatus of Cailletet. At ordinary temperatures (about times makes no change in the colour, according to the 10%) liquefa&ion does not take place under pressures of length of time it has stood, but if applied immediately it 200 to 300 atmospheres. On the contrary, from 50 atmonever fails to give the blue colour.-I am, &c.,

spheres the cooling due to the release determines the proALFRED J. M. EDGER.

du&ion of a thick mist and of a manifest trickling of liquid Laboratory, 13, Dean Street, Newcastle-on-Tyne,

down the sides of the tube. Under these conditions the February 27, 1879.

gas is at a temperature bordering upon its critical point. It suffices, indeed, to cool it a few degrees below zero in

order to effect a total condensation. Hydric silicide is THE DISCUSSION ON WATER ANALYSIS AT liquid at -11° at the pressure of 50 atmospheres; at -5°

under 70 atmospheres; at -1° under 100 atmospheres, THE CHEMICAL SOCIETY.

whilst at oo it remained liquid up to 200 atmospheres.

The conditions of the liquefaction of this gas resemble To the Editor of the Chemical News.

those of marsh-gas, with which it has so many analogies. SIR,-Will you allow me to repeat what I said at a recent Determination of Methylic Alcohol in Commercial meeting of the Chemical Society, since, from my words Methylens.-C. Bardy and L. Bordet.—The authors not being fully reported, an inaccurate statement was point out the imperfections of the ordinary process founded attributed to me, and, furthermore, because I should like on the transformation of methylic alcohol into methyl

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104 Chemical Notices from Foreign Sources. { ,

March 7, 1879. iodide. They effect the conversion in a special appa- remained limpid and neutral, and on microscopic examinaratus, a figure of which is inserted in their memoir. tion showed no trace of any organised ferments, but it

The Wagnerite of Bamle in Norway, and on a Reti- readily reduced cupropotassic reagent and turned yellow
nite from Russia.-F. Pisani.-Wagnerite, a fluoriserous on boiling with acids. A special experiment with potassic
phosphate of magnesia originally met with at Werfen, in ferricyanide showed that this reduction was due only in a
Salzburg, is identical with a mineral subsequently small part to dextrin.
discovered at Bamle, in Norway, and provisionally named Determination of the Specific Gravity and Coeffi -
Kjerulfine. The latter, however, contains a percentage of cients of Expansion of Liquid Methyl Chloride.-
lime. The Russian retinite was formerly mistaken for a MM. Camille Vincent and Delachanal.- Noticed in the
manganiferous garnet.

Comptes Rendus.
No. 6, February 10, 1879.

Remarks on the Memoir of E. and O. Fischer on

the Constitution of the Rosanilins.-A. Rosenstiehl.On Fermentations, a Final Reply to M. Pasteur. The author considers it as established that there exist no -M. Trécul.

rosanilins containing in their molecule more than 20 atoms Fourth Reply to M. Berthelot.-M. Pasteur. of carbon, and that there are three distinct rosanilins, viz., Hydro-electricity and Hydro-magnetism : Experi. rosanilin-e, decomposable into aniline and paratoluydin,

which MM. Fischer designate as pararosanilin, and prove mental Results.-C. A. Bjerknes.--The author has examined the action between two pulsating bodies ; between that a single molecule of toluydin enters into its compoa pulsating body and another which oscillates, and sition ; rosanilin-ß, decomposable into aniline and orthobetween two oscillating spheres. In all these cases con

toluydin; the authors might call it orthorosanilin ; they cordant pulsations produce attractions, and opposed have not studied, it but confound it with the following: pulsations give rise to repulsion.

Rosarilin-a-ß (Hofmann's rosanilin), resolvable into The Green Phosphorescent Light of the Molecular aniline, orthotoluydin, and paratoluydin. M. Rosenstiehl

at the outset of his researches considered this last comShock.-W. Crookes, presented by Th. du Moncel.–An abstract of a paper recently read before the Royal Society. pound as a mixture of the two former, but subsequently

was led to regard it as a well-defined chemical individual. Dissociation of Chloral Hydrate.-MM. Engel and The beautiful researches of E. and O. Fischer have reMoitessier.—The authors, along with M. Wurtz, and in moved all doubt on this point, and shown that it is the opposition to M. Troost, maintain that chloral hydrate superior homologue of pararosanilin, and not its isomer. does not exist as a definite gaseous compound, and that its The second must be the isomer either of the first or the equivalent does not correspond to 8 vols. The dissocia- third. tion is effected in an atmosphere of chloroform at 61°.

No. 2, January 20, 1879. Researches on Beer-yeast.--MM. Schützenberger and Destrem.—Yeast digested alone at 30° for twenty; cyanide and of certain Derivatives.-A. Descamps.

Preparation and Properties of Potassic Cobaltofour hours lost 1677 per cent of solid matters. along with sugar there is an increase of solids amounting Already noticed. to 113 per cent on the weight of the yeast.

Memoir on the Curves of Solubillty of Salicylic Homologues of Oxyheptic Acid.-E. Demargay.

and Benzoic Acids.-E. Bourgoin.--The curye of soluThe author has prepared the following homologues :

bility of benzoic acid in water is analogous to that of oxytetric, oxypentic, oxyhexic, and iso-oxyhexic acids.

salicylic acid. As far as about 35° the two curves are Analysis of an Ethiopian Honey.—A. Villiers.-- this temperature they change their nature, becoming

represented by parabolæ closely approximating, but above This honey, known by the natives as tazma, is found in modified in the same manner. Benzoic acid, which was subterranean cavities in Ethiopia, and is said to be col.

at first rather more soluble than salicylic acid, becomes lected by a species of mosquito. Its composition is :

less soluble, so that the two curves intersect each other Water


at 40°, at which point the solubilities are of course exaaly Levulose and glucose free from!

the same.


On Laurent's Carminaphtha.-A. Guyard. The


author finds that this compound, whose existence has been Dextrine

2789 Ash

doubted, may be prepared by dissolving at a gentle heat

2'5 Sundries and loss

1 equivalent or 128 grms. of naphthalin in a sufficient 91

quantity of glacial acetic acid. On the other hand, 12 equivs. or 600 grms. of chromic acid are also dissolved

in a sufficient quantity of cold glacial acetic acid. He Process for Enriching Phosphates with a Car- then adds at a gentle heat the chromic solution to the bonated Gangue.-L. L'Hote. The author heats to naphthalin until the mixture takes a green tint, then, when bright redness so as to expel the carbonic acid, and then all the chromic acid has been introduced, he boils for a removes the caustic lime formed by lixiviation with very few minutes. If the whole is then saturated with alkali, dilute hydrochloric acid. (To the best of our belief a

or an alkaline carbonate, and the liquid acidulated afresh, substantially identical process has been for many years in the carminaphtha is precipitated in red or brown-red occasional use at the Great Eastern Chemical Works, Aocks. He concludes that carminaphtha is really a proStowmarket.]

duct of the oxidation of naphthalin by chromic acid. When it is formed little carbonic acid is evolved, whilst

when phthalic acid is produced carbonic acid is evolved Bulletin de la Societe Chimique de Paris, in quantity. Carminaphtha is a very stable compound No. 1, January 5, 1879.

and dyes wool and silk a deep reddish brown without Examination of some Mineral Waters of Auvergne. mordant, the shades thus obtained being less remarkable -E. Willm.-Not susceptible of useful abstraction. for beauty than for permanence.

Transformation of Starch into Glucose by Cold Russian Chemical Society : Session of Nov. 2 24, Water.-J. Riban. The author had prepared, according 1878.-M. Wagner presented researches by MM. Schiroto Mohr's directions, a solution of salted starch by boiling kotf and Saytzeff on allyl-diethyl-carbinol, and a comI part of powdered starch in 100 parts of water, saturating munication by M. Sorokine on the oxidation of diallyl and with common salt and filtering. After a year the solution on the hexylic glycol thus derived. M. Barsilovsky sent became less and less sensitive to iodine, and after three a memoir on the azo-derivatives of toluen. A paper of or four years ceased to react with it at all. The liquid | M. Ponomareff's was read, on compounds belonging to the

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March 7, 1879.
,} Chemical Notices from Foreign Sources.

105 uric acid group. M. Menschoutkine laid before the Reduction of Analytical Weighings to a Vacuum. Society the results of researches on the formation of -G. F. Becker.—These two papers require the accomcompound ethers corresponding to the non-saturated panying plates. Becker lays down the law that the correctertiary alcohols. M. Gustavson communicated a paper tion for the influence of the atmosphere decreases in on the addition-products formed by chloride of aluminium proportion to the incresse of the square of the specific with benzin and toluen. M. Saytzeff gave a preliminary gravity. account of a hydrocarbon obtained by acting with dilute

Experimental Researches on Hydrogen peroxide. sulphuric acid upon allyl-dimethyl-carbinol.

-E. Schæne.—The author examines the behaviour of hydrogen peroxide with potassium iodide, a point of great importance for ozonoscupic observations. The author

concludes from numerous careful experiments that perFustus Liebig's Annalen der Chemie, Band 194, Heft 2 and 3.

fectly pure hydrogen peroxide, whether in the state of

vapour or in aqueous solution, and whether in a concenOn Daubréelite, a New Meteoric Mineral.-J. trated or diluted condition, liberates iodine from potassic Lawrence Smith.–This mineral, in a state of purity, iodide. consists of shining black fragments of more or less foliaceous structure, somewhat resembling molybdenite. and on their Polymerisation.-L. Jawein.-Not sus

Hexylens Formed from Tertiary Hexylic Alcohols It is not in the slightest degree attacked by hydrochloric acid, cold or hot, but dissolves slowly in warm nitric acid, | ceptible of useful abstraction. without depositing sulphur. Its specific gravity = 5'01. Its composition is :

Bulletin de la Société d'Encouragement pour l'Industrie


No. 61, January, 1879.

Experiments Recently Undertaken to Dephos

phorise Cast-iron.-M. Gruner.—The author has ascer98.70

tained that dephosphorisation may be effected in the Researches on Ketons of the Aromatic Series.-W. Bessemer apparatus or the Siemens furnace if the Stædel.—This paper also is not adapted for abstraction. siliceous lining in both is dispensed with and refractory

basic materials are used instead. Band 195, Heft 1 and 2.

Metallurgy of Nickel.-As a note to Mr. A. H. Allen's Nitrosalicylic Acids and the Isomerisms of the paper translated from the Journal of the Society of Arts Benzol Derivatives.-H. Hubner.-—A very extensive

is appended an illustarted memoir by Badoureau on the memoir, utterly incapable of useful abstraction.

treatment of European ores of nickel and cobalt. Researches on the Non-saturated Acids (Second Treatise).—Rudolph Fittig.-This memoir, which extends to upwards of 100 pages, comprises :-Further contribu.

Les Mondes, Revue Hebdomadaire des Sciences.

No. 6, 1879. tions to the knowledge of fumaric and maleic acids, by C. Petri ; investigations on the oil of Roman camomile, which, The Berlin Aniline Colour Company have issued a again, consists of a paper, by H. Kopp, on the organic lengthy reply to the note by MM. Bindschedler and Bush acids obtained on the saponification of the above-mentioned on malachite green, inserted in the Chemical News, oil; one by Julius Köbig on the several ingredients of vol. xxxix., p. 61. They deny that a green dye can be Roman camomile oil; one by A. Pagenstecher on angelicic industrially prepared from nitrobenzol and dimethyl-anilin and tiglic acids ; and a note by R. Fittig himself on the by an oxidation process. constitution of these two acids. The third grand division of the memoir is devoted to the non-saturated aromatic

No. 7, February 13, 1879. acids. Under this head R. Fittig and F. Binder describe This issue contains a long account of the chemical the addition products of cinnamic acid ; E. Posen treats manure works of M. Coquerel and Co., near Paris. This of amido-hydro-cinnamic acid, otherwise known as phenyl- establishment, though only opened in 1874, sold, in 1877, amido-propionic acid ; R. Fittig and C. Wurster describe six million kilos. of different manures. atropaic and isatropaic acid ; and R. Fittig adds certain theoretical considerations on the formation of nonsaturated hydrocarbons from the addition-products of the

MISCELLANEOUS. non-saturated acids.

Halogen Substitution-Products of Æthan.-W. Stædel. The author describes the action of chlorine upon The Royal Agricultural College, Cirencester.—The ethyl chloride, ethyliden chloride, ethylen chloride, di- rumoured resignation of Prof. Church is incorrect. The chlorethyl chloride, and mono-chlorethylen chloride, Committee of Management of the Agricultural College adding the remark that he has studied penta-chlorethan, are about to determine whether, after his marriage, he and is at present engaged with hexa-chlorethan, his re. can retain his post without residing in the College presults on both which bodies will shortly appear.

cincts. Should this chair become vacant intending canChloro-brom. and Brom-Substitution-products of didates may find the following extracts from the College Ethylen.-Dr. J. Denzel.—The author describes the pre

Bye-Laws of some use :
“XXI. The Principal

shall exercise supreme paration and properties of a-chlor-brom-ethylen, a-chlordibrom-ethylen, a-dichlor-brom-ethylen, dichlor-dibrom control over all Departments, Moral, Instructional, and ethylen, and the brom-substitution-products of ethylen.

Domestic, and over the Library, Museum, Gardens,

Laboratory, and Veterinary Hospital. Nomenclature and Boiling-points of the Chlor

“XXII. He ... shall regulate the frequency and brom-substitution-products of Ethan and Ethylen.- duration of the several Lectures and periodical ExaminaDr. J. Denzel.—The most important part of this paper is tions, and all other matters of detail. a table of boiling-points.

“XXIV. The Professors shall be appointed by the Simple Apparatus for Regulating and Varying Principal, and be removable by him. the Atmospheric Pressure in Distillations, Deter- “XXVI. No private tuition by Professors is allowed, minations of Boiling-Points, &c.-W. Stædel and E. without the previous consent in writing of the Principal, Hahn.

to be separately given in every case.

Meetings for the Week,

{ Marcha. Nes *XXV!.. The Professors shall be required to takeine A Technical Laboratory in London (speciality share the amongst the Students, subject to such regulations as the is open to receive two or three more Pupils for training in the techni. Principal shall appoint.

cal and industrial pursuits.-Apply to M. 305, CHEMICAL News Office, "XXVIII. All communications from the Professors Boy Court, Ludgate Hill, London, E.c. and other officers of the College to the Council or Com. A Chemist of Nine Years' standing, with.ex: mittee of Management shall be made only through the Principal.”

devoted special attentiori to oils and fats, will be open to an EngageThe last Professor appointed has had to promise that Office, Boy Court, Ludgate Hill, London, E.C.

ment in April. Highest references.-Address, A., CHEMICAL News he will engage in no literary work without leave from the Principal.


knowledge of practical chemistry, and well acquainted with several foreign countries, is desirous of an Engagement as Manager,

with the view of becoming an active partner, in some well-established NOTES AND QUERIES.

sound chemical works manufacturing acids, artificial manure, or aniline colours, and situated in or close to London. Highest refer.

ences. Communications of principals or their solicitors only to be Chromic Oxide. Will any of your readers inform me how or

addressed to G. H., CHEMICAL News Office, Boy Court, Ludgate where chromic oxide, as recommended by M. Audouin (Les Mondes, Hill, London, E.C. January 23, 1879) for fire-bricks, crucibles, &c., can be obtained at a cost that would allow of its being used for such a purpose.-CRUCIBLE.

The Advertiser, who has had many years' The

practical experience in experimental and analytical chemistry, is desirous of an Appointment, either in England' or Colonies, as

Chemist or Assistant.--Address, A. B. C., CHEMICAL News Office, MEETINGS FOR THE WEEK.

Boy Court, Ludgate Hill, London, E.C. MONDAY, 10th.-Medical, 8.30.

Young Man, at present engaged in a Tar Society of Arts, 8.

Work in Scotland, thoroughly experienced in manufacturing “ Dwelling Houses Their Sanitary Construction and Arrangements,” by fining of benzols and naphthas ; with a knowledge of chemistry,

liquid ammonia, also sulphate of ammonia from gas liquor, and in reDr. W. H. Corfield, M.A. (Cantor Lectures.) London Institution, 5.

German, and French, wishes to improve his position. --Address, S.H.,
Royal Geographica 1, 8.30.

Craigelea Chemical Works, Paisley.
TUESDAY, 11th.-Civil Engineers, 8.
Royal Institution, 3.

“ Animal Development," Wanted, Hydrated Sesquioxide of Iron (native) Prof. Schäfer.

in powder or soft lumps. Must be nearly free from manganese Anthropological, 8.

or other impurities. Samples, with price per ton in casks, to be Photographic, 8.

addressed " Ferrum,” Chemical News Office, Boy Court, Ludgate WEDNESDAY, 12th.-Society of Arts, 8. " The Compensation of

Hill, London, E.C.
Rigg, M.A.
Microscopical, 8.
Geological, 8.

acid, va pours present in the atmosphere surrounding a Chemical THURSDAY, 13th.-Royal, 8.30,

Works during the night and the day. Good references required. Royal Institution, 3. Sound," Prof Tyndall.

Address, ". Atmosphere," care of Lee and Nightingale, Advertising
Royal Society Club, 6.30.

Agents, Liverpool.
Society of Arts, 8. "The Injurious Effects of the TO SULPHURIC ACID AND CHEMICAL MANURE
Air of Large Towns on Animal and Vegetable

Life, and on Methods Proposed for Securing

Salubrious Air," by W. E. Thomson, F.R.S.E.
FRIDAY, 14th.-Royal Institution, 9. History of Games," by E. B. carrying 50 tons of acid ; fitted with steam pumps; in good con-

dition.-May be seen at Messrs. B. Jacob and Sons' Wharf, Copperas Quekett, 8.

Lane, Church Street, Deptford, from whom all particulars can be SATURDAY, 15th.-Royal Institution, 3. “Colbert and Richelieu," by

obtainer, by Mr. Walter H. Pollock.


with Laboratory fitted complete; suitable either for a chemist

in analytical practice or for classes in practical chemistry. Possibly Seven Volumes, 8vo., price £10 16s. 60.

a small incoming.–For full particulars apply to E. and S. Smith, Auctioneers and Agents, 22, Southampton Buildings, Chancery Lane,

A Sailing Tank Barge to be sold. Capable of



at Low Rentals, Works and Land


Allied Branches of other Sciences; founded on that of the late Dr. Ure. By HENRY WATTS, B.A., F.R.S.; assisted by eminent


AND OTHERS. Scientific and Practical Chemists.

" The English language is not rich in lexicons of science. We would point to this work as a model upon which others might be in Plots of Two to Ten Acres, near Swansea. Coals obtainable framed. To the practical analyst this work must prove of the utmost from 4s. 6d. per ton. Water good and abundant. Any description of value-to the philosophical investigator it must, as the record of all

manufactory can be carried on. Excellent Railway, Canal, and Dock former labours, be a great gain-and to the student who is true to his

accommodation close at hand.-Apply to Richard Hall, Esq., 37, Great studies, it will prove an ever-ready guide. Our manufacturers know the value of chemistry, and are many of them experts in the special Neath, Glamorganshire.

George Street, Westminster, or Mr. Thomas Williams, Aberdulais, branches of the science which bear on their particular industries. They require to know the latest discoveries, and to keep them as it RGANIC MATERIAMEDICA. were in stock until the march of improvement renders it necessary to apply them. This ‘ Dictionary'places them in possession of these

BY DR. MUTER. desiderata."-Atheneum,

Analytical Chemists will find this a concise and yet complete book

of reference for the isolation and examination of the active principles THIRD SUPPLEMENTARY VOLUME of drugs. Special appendix on the microscopic characters of the (VOL. VIII.), completing the Record of Chemical Discovery to

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