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ST. GEORGE'S HOSPITAL.

WINTER SESSION.

NEWS

. Laboratory.-The suite of Laboratories for Practical Instruction in General and Pharmaceutical Chemistry is under

Lecturer. Dr. H. M. Noad. Tuesday, Thursday, and the direction of Dr. Attfield, assisted by Mr. Tilden. Fee Saturday, at twelve.

One course, 67. 68.

SUMMER SESSION.

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Practical Chemistry.-Mr. Taylor and Mr. Heisch. Monday, Thursday, and Friday, at half-past eleven. One session, 57. 58.

ST. THOMAS'S HOSPITAL.

for the entire session of ten months, 267. 58. The Laboratories are open from half-past 9 a.m. till 5 p.m. Students can enter at any period during the Session.

Two Jacob Bell Memorial Scholarships of 30%. each are open to competition annually in July.

CITY OF LONDON COLLEGE, LEADENHALL
STREET.

An Evening Class on Monday, at 7 p.m., for Experimental instruction in Theoretic Chemistry. The annual Course consists of three terms, each averaging ten lectures ; fee, 5s. per term. Subjects: First year, Metalloids; second year, Metals and Practical Analysis.

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Evening Classes in connexion with the Department of Science and Art. The chemical lectures embrace courses on-I. Elementary Chemistry. II. Chemistry and Chemical Analysis. III. Organic Chemistry. IV. Geology and Lecturer.-Dr. A. J. Bernays. Tuesday, Thursday, and Mineralogy. A Laboratory Class also meets on two evenSaturday, at eleven. ings in each week.

WINTER SESSION.

SUMMER SESSION.

Mr. S. Highley, F.G.S., F.C.S., &c.-Scientific Educational Museum, 18, Green Street, Leicester Square, gives

Practical Chemistry.-Dr. A. J. Bernays. Friday, at evening class instruction in the following educational twelve; Saturday, ten to one.

WESTMINSTER HOSPITAL.

WINTER SESSION.

Lecturer.-Mr. F. Dupré, Ph.D. Tuesday and Thursday, at three; Friday, at half-past ten. One course, 57. 58.

SUMMER SESSION.

Practical Chemistry.-Mr. F. Dupré. Tuesday and Thursday, at half-past nine. One course, 27. 28.

PHARMACEUTICAL SOCIETY OF GREAT
BRITAIN, 17, BLOOMSBURY SQUARE, W.C.

LECTURES ON CHEMISTRY AND PHARMACY BY DR. REDWOOD.

courses:-Geology, Mineralogy, chemical and physical. Photography: its principles, practice, and applications, &c., &c.

Mr. Henry Matthews.-Laboratory, 30, Gower Street, in its application to Medicine, Agriculture, and Commerce. Bedford Square, gives practical instruction in Chemistry Laboratory open daily.

Dr. Medlock, 20, Great Marlborough Street, Regent Street.

Messrs. Nesbit, Lansdell, and Co.-College of Chemistry and Agriculture, 38, Lower Kennington Lane, S. Practical and Analytical Chemistry, Mr. J. Lansdell, F.C.S., Io a.m. to 5 p.m.

Mr. John Newlands, F.C.S.-Laboratory, 19, Great St.
These Lectures will be delivered on Wednesday and Helens, Bishopsgate Street, gives practical instruction in
Friday mornings, at half-past 8 o'clock.
Analysis, and prepares gentlemen for various public exa-

Part 1.-Physics in relation to Chemistry and Pharmacy.minations.
Part 2.-Chemistry of Inorganic Bodies.
Part 3-Chemistry of Organic Bodies.

Fee. For Registered Apprentices and Associates of the Society, 108. 6d. For those not connected with the Society, 1l. 18.

Students have free admission to the Library and Museum,

Polytechnic Institution.-Professor Pepper.-A Course of Lectures on the Chemistry of the Non-Metallic Elesent term. ments will be given on Monday evenings during the pre

Cornwall Villa, Westbourne Park. The Laboratory will Wentworth E. Scott, F.C.S.-Analytical Laboratory, re-open for pupils on Monday, October 16.

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UNIVERSITY OF CAMBRIDGE.

Professor of Chemistry.-G. D. Liveing, M.A.

A Course of Lectures is delivered every Lent and Easter Term. The former course must be attended by candidates for the B.A. and LL.B. degrees. Candidates for Medical degrees must attend both courses.

There is no University Laboratory, but Sydney and St. John's Colleges have laboratories of their own. The latter is open to members of other Colleges when not fully occupied by its own.

A new and commodious laboratory, in connexion with Downing College, will shortly be ready for use.

PROVINCIAL SCHOOLS.

BIRMINGHAM.-QUEEN'S COLLEGE. Professor of Chemistry.-Alfred Anderson.

A course of seventy Lectures on General Chemistry during the Winter Session, and a Practical Course for the Medical Boards in the Summer.

The Laboratory is open for daily instruction.

BIRMINGHAM.-SYDENHAM COLLEGE. Professor of Chemistry.-Dr. A. Hill.

A Course of Lectures on General Chemistry during the Winter Session, and a Practical Course in the Summer. The Laboratory is open for daily instruction.

BIRMINGHAM.-MIDLAND INSTITUTE. Lecturer on Chemistry.—Mr. W. M. Williams. BRISTOL.-BRISTOL MEDICAL SCHOOL. Lecturer on Chemistry.—Mr. Herapath.

BRISTOL SCHOOL OF CHEMISTRY. Conducted by Dr. F. W. Griffin.

A Course of Lectures on General Chemistry, commencing in October, and Laboratory instruction throughout the year.

ROYAL AGRICULTURAL COLLEGE, CIRENCESTER, GLOUCESTERSHIRE. Professor of Chemistry.-A. H. Church, M.A., Oxon, F.C.S.

Assistant Professor of Chemistry.-R. Warington, Esq., jun., F.C.S.

The Session commences on August 3. The Courses on Organic and Organic Chemistry will be continued to the end of the Session. The Lectures are illustrated by experiments and specimens. Some stress is laid upon the knowledge of important minerals, of which, in the College Museum, there is a good collection, lately enriched by valuable additions presented by Capt. Guise. The lectures are given at the following hours:Inorganic Chemistry. Tuesday, 2 p.m.; Thursday (catechetical), 10 am.; Friday, 9 a.m.

Organic Chemistry. Thursday, 3 p.m.; Friday, 2 p.m. The Course of Instruction in Practical Chemistry in the Laboratory comprises Chemical Manipulation for the 1st Class, Qualitative Analysis for the 2nd, and Quantitative

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Quantitative Analysis.-Thursday, 2 p.m.; Friday, 2 p.m. The Autumn Session of the College divides October 6, The Spring Session will commence about January 8, 1866. HULL AND EAST RIDING SCHOOL OF MEDICINE.

Lecturer on Chemistry.-Mr. Walton.
The usual Courses for the Medical Boards.

LEEDS SCHOOL OF MEDICINE.
Lecturers on Chemistry.-Messrs. Scattergood and R.
Reynolds.

The usual Courses for the Medical Boards.

LEEDS MECHANICS' INSTITUTION AND LITERARY SOCIETY'S LABORATORY. Chemical Classes for instruction in Elementary, Practical, and Analytical Chemistry.

Teacher.-Mr. George Ward, F.C.S.

The usual Sessional Course of instruction in abstract and applied Chemistry will commence on Friday, Septem. ber 29, at 8 p.m.

The Elementary Class meets on Friday Evenings, 8.15

to 10.

A Class for the study of Organic Chemistry meets on Monday evenings, 8.15 to 9.30.

Practical Chemistry, Laboratory Caurse, Tuesday and Thursday evenings, from 7.30 to 10 o'clock.

Fees, payable in advance :-Elementary Chemistry, Friday, per Session, 17. 15s.; 58. 6d. per month. The subscription includes a selection of apparatus and material specially adapted for the course of instruction. To pupils providing their own materials, 17. 18. per Session. Organic Chemistry, Monday, per Session, 10s. 6d. Practical Chemistry, Thursday, per Session, 17. 18.; 38. per month. Including apparatus and material.

LIVERPOOL COLLEGE OF CHEMISTRY.
Principal.-Dr. Sheridan Muspratt.
Assistant.-Mr. M. Murphy.

Laboratory open daily, except Saturdays. The principal or his assistant is always present from 10 to 5. A Course of Practical Chemistry for Medical Students in the Summer.

LIVERPOOL ROYAL INFIRMARY SCHOOL OF

MEDICINE.

Lecturer on Chemistry.-Dr. J. B. Edwards. The usual Courses for the Medical Boards. MANCHESTER ROYAL SCHOOL OF MEDICINE. Lecturer on Chemistry.—Mr. D. Stone. The usual Courses for the Medical Boards. A Laboratory is connected with the School.

OWEN'S COLLEGE, MANCHESTER. (IN CONNEXION WITH THE UNIVERSITY OF LONDON.) Chemistry.-Professor H. E. Roscoe, B.A., Ph.D., F.R.S., F.C.S.

Junior Class.-Wednesday and Saturday, from 9'15 to 10'15 a.m.

Subject: Inorganic Chemistry, comprising the laws of chemical combination, and a description of the properties and mode of preparation of the elementary_bodies and their most important inorganic compounds. Fee, 34. 3. Senior Class.-Tuesday and Thursday, from 9'15 to 10'15 a.m.

Subject: Organic Chemistry, giving the properties and

relations of the best defined groups of organic bodies, and
the laws regulating their formation.

Students are expected to answer the written exercises
and attend the viva voce examinations given in these classes.
Fee 31. 39.
For both classes, 51. 5s.
Extra Class.-Wednesday, from to 5 p.m.
Subject: Technological Chemistry.

The chemical principles involved in the most important chemical manufactures will be chiefly considered in this course. The subjects will be discussed as follows, and as far as time will permit :

1. Production of Heat-Heat of Combustion-Combustibles-Coal.

2. Production of Light-Coal Gas-Measurement of Illuminating Power of Coal Gas-Distillation of Coal. 3. Water and Air, as regards their Sanitary and Technological Relations.

4. Processes concerned in the manufacture and application of the Alkalies.

5. Dyeing and Calico Printing.

6. Manufacture of Acids.

7. Manufacture of Glass and Porcelain.

Free to all students attending the Laboratory Classes. Fee to others, 17. 18.

Dalton Chemical Scholarships.-Two, each of the annual value of 501., offered in alternate years, and tenable for two years. The scholarships are awarded for the best original investigations in chemistry prosecuted at the College, with a satisfactory written examination in Chemistry. The Lectures on Chemistry in Owen's College are recognised by the University of London for its Medical Degrees, by the Royal College of Surgeons, and by the Apothecaries' Hall.

NEWCASTLE SCHOOL OF MEDICINE.

(IN CONNEXION WITH THE UNIVERSITY OF DURHAM.) Lecturers on Chemistry.-Dr. T. Richardson and Mr. A. F. Marreco.

The Laboratories are open daily throughout the year from 10 to 5 o'clock. Non-Medical students can attend Laboratory Practice, and receive instruction in analysis, on the following terms-viz., six days in the week, 317. 10s. per annum; four days in the week, 217. per annum; and for shorter periods by arrangement. It is recommended that, if practicable, the Winter Course of Lectures should

Students attending this course must be acquainted with be attended before the student enters the Laboratories. the principles of chemical science. Fee, 27. 28.

Analytical and Practical Chemistry.—Laboratory Course -Professor Henry E. Roscoe, B.A., Ph.D., F.R.S. (The Professor is assisted in the instruction of the students by Mr. C. Schorlemmer.)

The aim of this course is to make the student practically acquainted with chemical science, to enable him to conduct analysis and original research, and to fit him for applying the science to the higher branches of Art, Manufactures, and Agriculture. To accomplish this, an attendance of not less than four days per week during three whole Sessions is, as a rule, necessary. It is very advisable that each laboratory student should attend or should have attended the course of lectures on Theoretical Chemistry.

The College Laboratory will be open for students daily from 10 30 a.m. until 5 p.m., except on Saturdays, when it will be closed at 1.30. Half an hour, from 1'30 until 2, allowed for dinner.

The Laboratory is fitted with every convenience for the prosecution of practical chemistry, all branches of qualitative and quantitative analysis, and original research. Each student is provided with a separate working table, set of tests, fuel, water, and gas, free of expense; but he is required to provide his own apparatus, a few of the more expensive reagents, and the chemicals required for his experiments. Other apparatus or instruments of a more expensive description may be obtained on loan from the Laboratory Steward, subject to regulations to be prescribed by the Professor.

Fees for the Session.-Students working six days per week, 217.; ditto four days, 17. 178.; ditto three days, 13. 138.; ditto two days, 97. 98. ; ditto one day, 51. 5s. ; Students entering the Laboratory Class at or after Christmas, for not less than two days per week, will be charged two-thirds of the fees for the whole Session.

Special Fees for Shorter Periods.-For six months, six days per week, 17. 178.; five months, ditto, 157. 15s.; four months, ditto, 137. 138. ; three months, ditto, 10l. 10s.; two months, ditto, 7. 78.; one month, ditto, 41. 4s. Students working only one day per week will ordinarily be required to spend three hours of that time at a class which will be held on Saturday mornings, from 10'30 a.m. to 1'30 p.m.

Chemical Calculations.-Instruction in the methods of Quantitative Estimation in Chemistry, and intended to supplement the instruction in Practical Chemistry, will be given by Mr. Schorlemmer, on Mondays, from 4 to 5 p.m. Laboratory students are recommended to attend and to answer the written exercises, and the viva voce questions given in this class.

SHEFFIELD MEDICAL INSTITUTION.
Lecturer on Chemistry.-James Allan, P.D., F.C.S.
The usual Courses for the Medical Boards.
SHEFFIELD SCHOOL OF METALLURGY,
CHEMISTRY, AND PHARMACY.
Professor of Chemistry.-James Allan, Ph.D., F.C.S.
The Winter Course of Lectures on Chemistry will com-
mence on Wednesday, October 6, 1865.
The Laboratories for Practical Chemistry and Assaying
are open daily.

Evening Classes on Mondays and Thursdays.

SCOTLAND.

The Scottish Schools open on November 6.

UNIVERSITY OF EDINBURGH.
Professor of Chemistry.-Dr. Lyon Playfair, C.B., F.R.S.
ROYAL COLLEGES OF PHYSICIANS AND
SURGEONS, EDINBURGH.
these Colleges are delivered :-
The following Courses of Lectures in connection with

Stevenson Macadam; Practical Chemistry and Analytical Chemistry (School of Arts, Adam Square), 10 a.m., Dr. Chemistry, 9 a.m. till 5 p.m., Dr. Stevenson Macadam (at Surgeons Hall); Chemistry (4, High School Yards), tical Chemistry, 9 a.m. till 5 p.m., Dr. A. C. Brown II a.m., Dr. A. C. Brown; Practical Chemistry and Analy(4, High School Yards).

Practical Chemistry, 37. 38.; Analytical Chemistry, 27. a month, 51. for three months, or 10l. for the Session of six months.

Practical and Analytical Chemistry, Dr. Stevenson Macadam (at Surgeons' Hall); Practical and Analytical Chemistry, Dr. A. C. Brown (4, High School Yards).

EDINBURGH VETERINARY COLLEGE.
Chemistry, Theoretical and Descriptive.—Dr. A. Dalzell.
UNIVERSITY OF GLASGOW.
F.R S.E., F.C.S., &c.
Professor of Chemistry.-Thomas Anderson, MD.,

Assistants.-Edmund J. Mills, B.Sc., F.C.S, tutor;
Magnus M. Tait, F.C.S.; William A. Dixon, F.C.S.;
Walter Stewart.

The Courses of Chemical Instruction given by Dr. Anderson are intended to afford to the Student the means of acquiring a thorough knowledge of the Science of Chemistry, and its applications to Medicine and the different branches of the useful arts.

In addition to the Lectures, the class is divided into small sections, which meet separately, and receive tutorial instruction from Mr. Mills.

At certain periods during the Course, written exercises are prescribed, some to be done at home, and others in the lecture-room, and without the aid of books or notes.

The Course of Practical Instruction in the Laboratory is arranged in such a manner as to lead the Student through a complete series of Analytical operations.

The fundamental instructions are the same for every pupil, whatever may be the ultimate object of his studies; but after he has acquired a competent knowledge of the general methods of analysis, and a sufficient amount of practical skill, the course for each student diverges into the particular department of the science, or its practical application to Medicine, Agriculture, or the Manufacturing Arts, which he may desire to prosecute.

Students can enter the Laboratory at any time throughout the year.

The Laboratory Fee is 41. 4s. for three months; for the Course of Lectures, 37. 38.

ANDERSON'S UNIVERSITY, GLASGOW. Professor of Chemistry.-Dr. Penny.

The Winter Course of Scientific Lectures on Chemistry will be commenced on Tuesday, November 1, at 10 a.m. Instruction in Practical Chemistry and Analysis in the Laboratory, daily from 11 till 4.

The Private Laboratory for Commercial Analyses and Assays is open daily throughout the year.

Evening Course of Popular Lectures on Inorganic Chemistry, with special reference to the Industrial Arts, on Fridays, commencing November 6, at 8.30.

Evening Course of Practical Chemistry, on Thursdays, at 7.

GLASGOW MECHANICS' INSTITUTION. Lecturer on Chemistry.-Dr. Wallace, F.R.S.E., F.C.S. The Laboratory is open throughout the year for instruction in Practical and Analytical Chemistry. Fee for six months, rol. 108.

A Course of twenty-five Evening Lectures on Organic Chemistry will commence on 3rd October, at 8.30 p.m. LABORATORY AND LECTURE-ROOM, 108, INGRAM-STREET, GLASGOW.

Six months' Course.

A. T. Machattie, Ph.D. F.C.S. Daily Lectures on Chemistry. Fee, 21, 28. Beginning on Monday, November 6, at 10 a.m. Analytical Chemistry.-Daily from 9 a.m. till 5 p.m., beginning November 1.

These Classes qualify for the various Medical and Public Boards.

EVENING CLASSES.-Course of twenty-five lectures on Inorganic Chemistry in the Lecture-hall of the Glasgow Athenæum, on Tuesday Evenings at 8, beginning on November 7. The Laboratory is open on Mondays, Wednesdays, and Fridays, from 7 till 9 p.m., for instruc9 tion in Analytical and Practical Chemistry.

EVENING SCIENCE CLASSES.
CARLTON-PLACE SECULAR SCHOOL, GLASGOW.
Teacher.-John Mayer, F.C.S.
Chemistry and Metallurgy, especially with the view of
passing the Examinations of the Society of Arts and the
Government Department of Science and Art.

Lectures on Tuesday and Thursday at 8 p.m.
UNIVERSITY OF ABERDEEN.
Professor of Chemistry.-James S. Brazier, F.C.S.
Teaching Assistant.-James C. Brown.

Oral Examinations are held at fixed periods during the Session.

The Fee is 37. 38.

II. PRACTICAL COURSE.-This course is given during the Summer Session. It is chiefly devoted to practice in Qualitative Analysis, with the view of enabling the Student to test unknown substances, poisons, the animal secretions, &c. The Fee is 31. 38.

III. LABORATORY PUPILS.-The Chemical Laboratory is open during the College Session, on the first five days in each week, from 10 am. to 3 p.m. The course of instruction is under the direction of the Professor of Chemistry and of the Teaching Assistant.

A limited number of the most distinguished Students attending the Practical Course are admitted, free of charge, as working pupils into the Laboratory.

Textbooks: Wilson's "Chemistry" (Chambers' Course); Fownes' "Manual of Chemistry;" Miller's "Elements of Chemistry." ST. ANDREWS. Chemistry.-M. Foster Heddle, M.D.

IRELAND.

DUBLIN.-TRINITY COLLEGE.
Professor of Chemistry.-Dr. J. Apjohn.
The Laboratory is open through the year.
CATHOLIC UNIVERSITY.
-Professor of Chemistry.-Dr. W. K. Sullivan.
CARMICHAEL SCHOOL OF MEDICINE.
Lecturer on Chemistry.-Dr. Davy.
Practical Chemistry in the summer.

LEDWICH SCHOOL OF MEDICINE.
Lecturer on Chemistry.-Dr. Cameron.
Practical Chemistry in the summer.

ROYAL COLLEGE OF SURGEONS.
Lecturer on Chemistry.-Dr. Barker.
Laboratory open throughout the year.

QUEEN'S COLLEGE, BELFAST.
Professor of Chemistry.-Dr. Andrews.

QUEEN'S COLLEGE, CORK. Professor of Chemistry.-Dr. Blyth.

QUEEN'S COLLEGE, GALWAY. Professor of Chemistry.-Dr. T. H. Rowney, A Laboratory for practical instruction is attached to all the Queen's Colleges. The usual Practical Course for the Medical Boards is given in the summer. The Winter Session in Ireland commences in November.

NOTICES OF BOOKS.

Journal für Praktische Chemie. No. 10 and 11. 1865. R. HERMANN contributes several papers on the Niobium group of metals. The first and most important is entitled "Researches on Niobium, Tantalum, and Ilmenium." The author announced the discovery of ilmenium in 1845, but its existence has been scarcely recognised, and it is seldom mentioned in chemical works. In this paper, however, a lengthy account of the metal and its compounds is given, which seems to place its individuality beyond doubt, although Blomstrand, experimenting upon one of the same minerals (columbite) in which ilmenium is found, recognised only niobium and tantalum. We shall give an abstract of the paper shortly. The other papers by the same author are "On the Composition of Wöhlerite, Aeschynite, and Eurenite, with Remarks on Zirconia;" and On the Occurrence of Kerolith in the Ural." A paper by Delafontaine "On the Composition of Molybdates of the Alkalies" succeeds. The next article is by Rudolph Weber, "On Compounds of Acichloride of Selenium with

I. SYSTEMATIC COURSE.-The Lectures are delivered on the first five days of each week during the College Session. They commence with the discussion of the General Principles of Chemical Philosophy, including the Atomic Theory and the Chemical Relations of Heat. The Non-metallic and Metallic Elements and their compounds" are fully treated of, together with their more important applications to the Arts. The latter part of the course is devoted to the subject of Organic Chemistry.

Metallic Chlorides." The only other paper we need notice of our countrymen in believing a story for which there is
is by Dr. Hugo Gericke, "On the Salts of Bromisatinic not the slightest foundation. Antozone, therefore, has no
Acid, and some Ammonia and Sulphur Derivatives of existence."
Bromisatin."

CORRESPONDENCE.

Ethers of the Formic Series.

To the Editor of the CHEMICAL NEWS. SIR,-M. Lorin announced to the French Academy of Sciences last month (August 28) that he had discovered a new method of preparing the formiates of the alcohol radicles. He distils glycerine, oxalic acid, and the requisite alcohol together. Will you permit me to remind your readers that more than nine years ago (in the Philosophical Magazine for July, 1856) I described the same process? I may state that the extensions of the process mentioned in my original paper I have repeatedly verified and constantly employed for some years in the preparation of various ethers. I enclose a copy of my original paper. I am, &c. A. H. CHURCH.

R. A. College, Cirencester.

Manufacture of Soda from Cryolite in America.

To the Editor of the CHEMICAL NEWS. SIR,-How comes it that the English soda ash manufacturers have allowed the Americans to steal a march on them in the matter of cryolite? A company here have secured, so I understand, the monopoly of all the cryolite mined in Greenland, except that used in Denmark, for the purpose of the manufacture of soda ash. Extensive works are going on up near Pittsburg, in this State. The process used is the Danish-i.e., boiling in lime and precipitating the Al2O3 by CO,. My informant is one of the capitalists of the company.

Now as to the supposed decomposition of oxygen, or its division into two oppositely active states, we thought that Schönbein had convinced himself, if not everybody else, of the reality of that. Ozone, ✪, we know in the gaseous state; antozone, , has never yet been obtained in the gaseous form; but it would, we fancy, be just as reasonable to deny the existence of fluorine, as to deny the existence of antozone, on the simple ground of its non-isolation. The story told was that Schönbein had isolated antozone; and if he is “much amused" at our credulity in believing this, we may say that the Professor himself is to some extent responsible for it,-for, in a letter addressed to Dr. Faraday, published in the Philosophical Magazine for February, 1861, he writes :-"I have been working hard these many months to obtain antozone, ✪, in its insulated state, and I flatter myself that I have succeeded-at least, to a certain extent.' Now, no great stretch of credulity was required to believe that the Professor had accomplished in 1865 what he says he says he had succeeded in doing, "to a certain extent," in 1861.

British Association.-The following papers were read in Section B on the last day of the meeting:T. Wood-On the New Formulæ, with Reference to Schools and Examinations.

Professor Maskelyne-On Crystallised Melaconite and Tenorite.

W. White exhibited Photographs of the Interior of the Great Pyramid taken with the Magnesium Light by Professor C. Piazzi Smyth, with Notes thereon.

W. Willis-On the Aniline Process in Photography. W. L. Scott-On the Formation of Ammonia from Nitrogen W. L. Scott-On the Presence and Functions of Ammonia in the Atmosphere. or its Homologues in the Blood.

J. C. Bowring-On the Preservation of the Sheathing of Ships, and Extraction of Silver from Sea Water, by Means of Electricity.

I think if the cryolite can be obtained in sufficient quantity the importation of soda ash and caustic soda into this country is at an end, or rather will be. I fancied our manufacturers were pretty smart fellows, but they have let the Yankees get ahead of them in this case. All Eng-J. lish manufacturers must look well to themselves, as the Americans are following very close at their heels, in some cases tripping them up. I am, &c. H. B. Philadelphia, U.S., August 30.

MISCELLANEOUS.

This we

Antozone.-In March last, a paragraph was forwarded to us announcing, with much circumstantiality, the discovery by Schönbein of a means of isolating antozone, and describing some of the properties of the gas. published, accompanying it with a remark distinctly intimating our doubts of the truth of the story. After searching in vain in the Proceedings of the Munich Academy (to which we were referred) for Schönbein's original paper, we again stated, in the CHEMICAL NEWS for April 7, our disbelief in the story. Unfortunately, a writer on meteorology seems to have seen the first paragraph, and overlooked our reservation; and a few weeks ago he referred to the subject in a letter to The Times. This brought a letter from Dr. Roscoe, who, having recently seen Schönbein, learnt from his own lips that no such discovery had been made. Apropos to this, our friendly contemporary the Reader inserts the following paragraph:

"According to a letter in The Times of Monday last, signed by Professor Roscoe, the story of the supposed decomposition of oxygen, said to have been made by Professor Schoenbein, was simply a canard sent to The Chymical News some few weeks ago by some wag. Professor Schoenbein, at the recent meeting of Swiss scientific men, at Geneva, expressed himself much amused at the credulity

C. Bowring-On the Direction of the Electric Current. A. Hill-On the Sanitary and Economical Aspects of the Sewage Question.

H. Bird-Observations on the Utilisation of Sewage, as conducted at Stroud, and on the Growth of the Sewage Plant.

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Vol. XI. of the CHEMICAL NEWs, containing a copious Index, is now ready, price 11s. od., by post, 11s. 6d., handsomely bound in cloth, gold-lettered. The cases for binding may be obtained at our Office, price 18. 6d. Subscribers may have their copies bound for 2s. 6d. if sent to our Office, or, if accompanied by a cloth case, for Is. Vols. I. and II. are out of print. All the others are kept in stock. Vol. XII. commenced on July 7, 1865, and will be complete in 26 numbers.

Anxious. A reply next week. Thallium.-The observations are new. Will our correspondent send a note for publication?

W. G.-. Phillips' "Mineralogy," last edition. 2. Bolley and Paul, "Technical Analysis." 3. Of Williams and Norgate, Henrietta Street, Covent Garden.

Microscopical Society.-We are sorry to say that we know of no Society that admits ladies to its ordinary evening meetings. shortly. The Bonn laboratory is expected to be ready in a couple of C. P., Notting-hill-We shall probably have more of the reports years. We will endeavour to obtain the terms of the foreign schools

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