May i, 1913] 



NATURE 



235 



Using the method with sodium amide, previously 

 described by the author, all of the four hydrogen 

 atoms of the two carbon atoms adjacent to the ketone 

 group can be replaced by methyl or allyl ; the intro- 

 duction of the ethyl group offers difficulties. Full 

 details of the preparation and properties of the com- 

 pounds obtained by the application of the reaction are 

 given in the paper. — M. de Forcrand : Thermochemical 

 study of uranyl nitrate and its hydrates. — M. Sabatier 

 was elected a member of the section of non-resident 

 academicians, and M. Jules Boulvin a correspondant 

 for the section of mechanics. — H. Burkhardt : A 

 theorem on the gamma function. — Michel Petrovitch : 

 The entire transcendentals generalising exponential 

 and trigonometric functions. — A. Bilimovitch : Con- 

 servative non-holonomial systems with linkages de- 

 pendent on the time. — Jules Andrade : Friction and 

 isochromism of the double spiral. A remarkable 

 property of a group of double spirals suitably chosen. 

 A solution of a problem in chronometry. — Louis Roy 

 The motion of indefinite viscous media. — L. Decombe 

 The electronic theory of gravitation. — Henri Benard 

 . The structure of vortices behind an obstacle. The 

 motion has been studied with the aid of the kinemato- 

 graph, and a reproduction of a film is given. — C. 

 Dauzere : A new species of cellular vortices. A studv 

 of the eddies produced in the surface of molten 

 stearic acid. — M. Deslandrcs : Remarks on the preced- 

 ing communication of M. Dauzere, pointing out the 

 analogy between the phenomena observed bv M. 

 Dauzere and those occurring in the atmosphere. — A. 

 Blondel : The nitometer, an apparatus for rapidly 

 measuring' the brilliance of a luminous surface. — G. 

 Sizes : The transversal vibrations of strings. — A. 

 Portevin : The elastic limit of alloys. The method 

 used was based on the appearance of the slip bands 

 on the polished surface of the specimen. Six repro- 

 ductions of microphotographs illustrating the results 

 obtained with different alloys are given. — Georges 

 Charpy and Andre Cornu : The transformations of the 

 alloys of iron and silicon. The measurement of the 

 coefficient of expansion of the alloy was utilised as a 

 means of following the transformations instead of 

 the more usual cooling velocity. The critical points 

 obtained by the two methods do not agree. — Daniel 

 Berthelot and Henry Gaudechon : The dissociation of 

 gaseous compounds by light. The gases ammonia, i 

 phosphoretted hydrogen, arseniuretted hydrogen 

 methane, silicon hydride, zinc ethyl, phosgene, sul- 

 phur hexafluoride, were submitted to the light from 

 a mercury-vapour lamp. Of these sulphur hexa- 

 fluoride and methane were the only gases unaffected. 

 — Ch. Maguin : The orientation of liquid crystals by 

 sheets of mica. — G. Lafon : The use of fat in the 

 animal organism. Fats can be utilised directly, 

 similarly to glucose, particularly in muscular work. — 

 E. Wertheimer and G. Battez : The mechanism of the 

 salivary secretion produced by the injection of saline 

 water into the vessels. It is shown that the action 

 is almost entirely due to the effects on the nerve 

 system. — Andre Mayer and Georges Schaeffer : Lipo- 

 cytic coefficients and the imbibition of living cells by 

 water. It~Is proved that there is a numerical relation 

 between the lipocytic coefficient of tissues and their 

 maximum imbibition by water. — Maurice Arthus : Ex- 

 perimental researches on the poison of Buthus quin- 

 questriatus, — !L. C. Soula : The relations between 

 anaphylaxy, immunity, and autoproteolysis of the 

 nervous centres. The state of anaphylaxy is accom- 

 panied by a marked increase of autoproteolysis of the 

 nerve centres. — Marcel Belin : The relations existing 

 between anaphvlaxy and immunity. A study of the 

 effect of the injection of oxidising' agents on the 

 toxines of tetanus, colibacillus, and vaccine. — Albert 



Robin : The metabolism of the urinary chlorides in 

 cancerous subjects. — Em. Bourquelot and Em. Verdon ; 

 Researches on the biochemical synthesis of /3-methyl- 

 glucoside in a neutral fluid, not taking part in the 

 reaction. This synthesis can be effected by emulsin 

 in aqueous acetone solutions. — E. Kayser : Contribu- 

 tion to the study of ropy beer. — Venceslas Moycho : 

 Study of the action of ultra-violet light on the ear of 

 tin- rabbit. The influence of intensity and of inter- 

 mittent radiations. A continuation of work described 

 in an earlier paper. — CEchsner de Coninck : The pre- 

 sence of propionic acid in the secretions of rheumatic 

 subjects. Propionic acid was isolated from the urine. 

 — G. R. Blanc : Parasitic typhlitus of the Nandou. 

 The disease appears to be due to a new species of 

 Heterakis, for which the name H. parisi is proposed. 

 — Raphael Dubois : A micrococcus from the calcareous 

 concretions of tuberculous origin. — J. A. Samuels : 

 Cytological studies on the relations existing between 

 the nucleus and the development of crystals in the 

 parenchymatous cells of the perianth of Anthurium. — 

 Francois Bochin : Hydrographical phenomena in the 

 western region of the Paris basin. — Louis Mengaud : 

 Contribution to the study of the Wealdian in the 

 province of Santander. — Edmond Bordage : The 

 Eocene gulf of Rovan. — Jacques Deprat : The geology 

 of Tonkin. — Ph. Negris : Contribution to the geologv 

 of Greece. — F. Dienert : The use of absorbent pits. A 

 reply to a communication of M. Dollfus relating- to a 

 means_ of combating floods in the Paris basin. — A. 

 Boutaric : A relation between the atmospheric absorp- 

 tion and the polarisation of light diffused by the sky. 



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