Methylacetylene Garbinol.-M. Lespieau.-The 3-| brominated derivative of the ethylene alcohols of the type CH2=CB-CHOH-R can be prepared by the action of Grignard's magnesium compounds on monobromacrolein. When treated with alcoholic potash the ethylenic alcohols gives the acetylene alcohols, CH=C-CHOH-R. The author has prepared CHEC-CHOH-CH3 by this method.

No. 3, January 17, 1910. Dielectric Cohesion of Neon.-E. Bouty. Since

the molecular weight of neon lies between the molecular weights of helium and argon it is to be expected that the dielectric cohesion would also be intermediate between

those of the two gases. This, however, is not the case, the dielectric cohesions being 7.6 for neon, 18.3 for helium, and 435 for air. Thus, a layer of neon of depth 57 cm. would offer the same resistance to the electric discharge as a layer of air 1 cm. deep.

Action of Heat on Aluminium in Vacuo.-E. KohnAbrest. When aluminium is heated in a vacuum it begins to volatilise at 1100°; the volatilisation is not proportional to the duration of heating, but occurs very rapidly at first, and then gradually slackens. Apparently the aluminium acts upon the walls of the containing vessel, and sets free silicon; the latter undergoes a partial volatilisation, the silicon vapour being absorbed by the liquid aluminium. The silicon is set free in the amorphous form.

Cementation of Iron by Solid Carbon.-G. Charpy and S. Bonnerot.-Iron does not undergo cementation at 1000 by solid carbon in absence of a gaseous vehicle. It must not thence be concluded that carbon does not diffuse into iron, though it is difficult to decide what part is played by the occluded gases. Further experiments are necessary in order to decide whether the diffusion of carbon into the interior of cast-iron and steel occurs with or without the intervention of the occluded gases.

NEWS

MISCELLANEOUS.

Third International Congress and Exhibition of Physiotherapy will take place in Paris at the Ecole de Médecine, and last from March 29th to April 3rd. The Committee, composed of the most eminent French doctors, hope that their English confréres will meet them in great numbers on that occasion. They are preparing an attractive programme of festivities, lectures, visits, &c., to which all the visitors and exhibitors will be invited. English and French railways have consented to reduce their fares to Paris.

The

Chemical Laboratory Fresenius, Wiesbaden, Germany.-At the Autumn Vacations Course, 1909, held at the Laboratory Fresenius, twenty-one students took part. During the regular Winter Term, 1909-10, thirtyfive students were inscribed, including one lady and two hearers. The nationality of the students was as follows: -Twenty-three Germans, two Hollanders, two Frenchmen, one Englishman, one Luxembourger, one AustroHungarian, one Roumanian, one Russian, one Swiss, one Spaniard, and one Turk. The Directors of the Institute, Geh. Regierungsrat Prof. Dr. H. Fresenius, Prof. Dr. W. Fresenius, Prof. Dr. E. Hintz, are assisted by six duly qualified lecturers and heads of departments. Besides these there is a staff of eighteen assistant chemists, four sub-assistants, and four lady apprentices. There will be a Vacations Course beginning March 1st, 1910. next regular Summer Term will commence on April 25th, 1910. During the Winter, 1909-10, a number of scientific treatises originated from the Laboratory Fresenius; they were published in different chemical journals, especially in the Zeitschrift fur Analytische Chemie, edited by the Directors. As special prints appeared-" Chemische Untersuchung der Georgen-Quelle, der Marien-Quelle, der Wiesen-Quelle, der Mariannen-Quelle, und der FriedrichsQuelle zu Bad Landeck in Schlesien," by Geh. Regierungsrat Prof. Dr. H. Fresenius; and Chemische und Physikalische-chemische Untersuchung der San AntonQuelle uz Orihuela, Provinz Alicante (Spanien)," by Prof. Dr. E. Hintz (at C. W. Kreidel's, Publisher, Wiesbaden). Besides the scientific work, a great number of chemical analyses were executed during the Winter half year, 1909-10, for commercial, mining, industrial, and agricultural purposes, also in the interest of Sanitary Boards, Criminal, and other State Departments.

A similar reaction occurs with dinaphthopyranol and Michler's hydrol. The corresponding aldehydes and acetones give not substitution but addition products with hypophosphorous acid.

Vicianose, a New Reducing Sugar with C.Gabriel Bertrand and G. Weisweiller. By the diastasic hydrolysis of the glucoside vicianine, obtained from the seeds of Vicia augustifolia, the authors have isolated a new reducing biose to which they have given the name vicianose. It is very soluble in water, and only very slightly soluble in strong alcohol. Its rotatory power is given by [a] D D = +36 72'. It fuses at 210° and elementary analysis shows that its formula is C11H20010.

Condensation of Secondary Butyl Alcohol with its Sodium Derivative.-Marcel Guerbet.-When secondary butyl alcohol is heated with its sodium derivative two alcohols are obtained. One boils at 167-169°, and the other at 250-255°. The former is secondary dibutylalcohol, CH3-CH2-CH(CH3)-CH2-CH2-CHOH-CH3, and the latter is secondary tributylalcohol, C12H26O.

"Lead

MEETINGS FOR THE WEEK. 7th.-Royal Society of Arts, 8. (Cantor Lectures). Work," by Lawrence Weaver. Royal Institution, 5. (General Monthly Meeting). Society of Chemical Industry, 8. "Rational Analysis of Clays," by W. C. Hancock. Application of Pressure Gas to Furnace Use," by A. W. Onslow. "New Gas Sampling Tube," by G. N. Huntly. "Complete Analysis of Leather, and a Common Mistake in the Determination of the Degree of Tannage," by J. G. Parker and M. Paul. "Spontaneous Decomposition of Blasting Gelatin," by J. B. Henderson.

TUESDAY, 8th.- Royal Institution, 3. "The Emotions and their Expression," by Prof. F. W. Mott, F.R.S. WEDNESDAY, 9th.—Royal Society of Arts, 8. "The Public Trustee and his Work," by Charles J. Stewart. THURSDAY, 10th.-Royal Institution, 3. "Turner," by A. J. Finberg. Royal Society of Arts, 4.30. "Indian State Forestry," by Saint-Hill Eardley-Wilmot, C.I.E. Royal Society. "Causes of the Absorption of Oxygen by the Lungs," by C. G. Douglas and J. Š. Haldane. "Action of Nicotine and other Pyridine Bases upon Muscle," by V. H. Veley and A. D. Waller. "Extinction of Sound in a Viscous Atmosphere by small Obstacles of Cylindrical and Spherical Form," by C. J. T. Sewell. "Ionisation of various Gases by the Rays of Actinium," by R. D Kleeman.

FRIDAY, 11th.-Royal Institution, 9. "Ionisation of Gases and Chemical Change," by H. Brereton Baker, F.R.S. Physical, 8. "Coherers," by W. H. Eccles. "Earthair Electric Currents," by G. C. Simpson. "An Automatic Töpler Pump designed to Collect the Gas from the Apparatus being Exhausted," by

B. D. Steele.

SATURDAY, 12th.-Royal Institution, 3. "Electric Waves and the Electro-magnetic Theory of Light," by Prof. Sir J. J. Thomson, F.R.S., &c.

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