PARIS.Academy of Sciences, July 22.-M. Lippmann in the chair.-M. Bassot: The preparation of a map of western Morocco on the scale of 1/200,000. Details are given of the measurement of the base and tri-angulation carried out up to the present. The work will be continued in October.-A. Miintz and H. Gaudechon: The degradation of phosphatic manures in the soil. From the experiments described it is shown that phosphatic manure should be given annually. Larger amounts than those required for one year are degraded to a non-assimilable form.- Paul Sabatier and Alph. Mailhe: The catalytic preparation of the phenolic and diphenylenic oxides. Mixed oxides. The method is based on the catalytic action of thorium oxide at 380° to 450° C., and examples are given of the ethers prepared in this way..-M. Amann: Observation of the solar eclipse of April 16 and 17, 1912, at the Observatory of Aosta, Italy.- L. Ancel: The photometry of the solar eclipse of April 17, 1912, with the aid of selenium and a recording galvanometer. The curve obtained during the eclipse is reproduced.-Louis Dnnoyer: The disruptive discharge through pure sodium vapour.-P. Nogues: A new kinematograph. The instrument described can take 180 images per second, and has been applied to the examination of certain movements in running, jumping, and flight.-A. de Gramont: The ultimate lines and great sensibility of chromium, manganese, iron, nickel, and cobalt.-Felix Bidet: Equilibrium of the system ammonia gas and ethylenediamine chlor-hydrate.-J. Larguier des Bancels: The solubility of coloured resinates submitted to the action of light.- A. Guasco: The detection of small proportions of carbon monoxide in air.-V. Hasenlratz: The hydrogenated derivatives of apoharmine.-G. Vavon: The catalytic hydrogenation of the ketones. An account of the products obtained from various ketones when acted upon by hydrogen in presence of platinum black. The course of the reaction depends upon the liquid in which the ketone is dissolved.-Edouard Bauer: The action of sodium amide upon i: 4-dibenzoylbutane.- F. Jadin and A. Astruc: The presence of arsenic in some parasitic plants and their hosts. Parasitic plants, like those growing directly on the soil, contain normally a small proportion of arsenic. There is no apparent connection between the proportions of arsenic present in the parasite and its host.-E. Chuard and R. Mellet: Variations in the proportion of nicotine in various organs of the tobacco plant in the course of growth.-M. Card: The possibility and frequency of autofertilisation in the cultivated vine.-J. Tournois: The influence of light on the flowering of the Japanese hop and of hemp.-E. C. Teodoresco: The assimilation of nitrogen and phosphorus by the lower algae.-I. Pouget and D. Chouchak: The law of the minimum. A discussion of a recent note by M. Maze on the relations between a plant and its nutritive medium.-J. Giaja: The ablation of the pancreas in Haliaetus atticilla.-Pierre Girard: The electric charge of the red corpuscles of the blood. Measurements of the velocities of the red corpuscles in an electric field in isotonic solutions of saccharose, common salt, and serum.-Jean Camus: The toxicity of mineral salts in the cephalo-rachidian fluid.-N. A. Barbieri: The non-existence of free or combined lecithines in yolk of egg and in biological structures. -Mme. and M. Victor Henri: Variation of the abiotic power of the ultra-violet rays with the wave-length. The abiotic power of the ultra-violet rays increases as the wave-length diminishes. There is no indication of a maximum.-Maurice Holderer: The mechanism of the arrest of diastases by filtration.-Em. Bourque-lot and Marc Bridel: The reversibility of fermentations. The influence of the dilution of ethyl alcohol on the synthetic action of enlulsin" in this medium.-M. Kcehler: The Echinoderms of the Charcot expedition. -J. L. Dantan: The working of the genital gland in Ostrea edulis and Gryphaea angulata. The protection of natural oyster beds.-E. Bonllanger and M. Dugardin: The mechanism of the fertilising action of sulphur.-Ed. Dujardin-Beaumetz and E. Mosny: The evolution of the plague in the marmot during hibernation.-J. Vallot: The comparative absorption of the chemical and heat radiations of the sun between Mt. Blanc and Chamonix.