June 18, 1914] 
NATURE 
A2L 
Riemann function &(t)—F. La Porte: The compensa- 
tion of a quadrilateral—H. Pelabon ; Thermo-electric 
study of selenium-antimony mixtures. The existence 
of the definite compound Sb,Se, was proved by these 
measurements.—Paul Pascal: Uranyl sulphocyanide.— 
R. Marcelin: The exchange of material between a 
liquid or a solid and its saturated vapour.—Maurice 
Curie : The deviations of atomic weights obtained with 
lead arising from different minerals. The atomic 
weight of lead derived from uranium minerals is lower 
and from monazite slightly higher than that of lead 
from galena. These results are in agreement with 
those predicted from the theory of radio-active trans- 
formations.—Philip E. Browning: The action of 
bromine on the hydroxides of lanthanum and 
didymium. These hydroxides, in suspension in dilute 
alkali solutions, dissolve in bromine with unequal 
velocities, the solution of the lanthanum being more 
rapid. A description is given of the application of 
this fact to a new and rapid method of separation of 
these two metals.—Edouard Bauer: The action of 
sodium amide upon some 1: 5-diketones. Study of pro- 
ducts of the reaction between sodium amide and the 
two ketones, benzaldiacetophenone and _ dibenzoyl- 
I : 3-propane.—Milivoye Losanitch: The susceptibility 
of the ethylene lactones for fixing sodium derivatives 
of methylene compounds.—E. E. Blaise: The 
hydroxylamine derivatives of 1:4-diketones and 
N-oxy-2 : 5-dimethylpyrrol. The reaction between 
hydroxylamine and diacetylsuccinic ester is not com- 
parable with that of the same reagent and 1:4 
diketones. In the latter case only mono- and di-oximes 
are formed.—G. Courtois: Uranyl glycolate, and lac- 
tate and some uranyl salts of the polyacids of the fatty 
series.—Charles Dufraisse: The two  stereoisomeric 
forms of benzoylphenylacetylene dibromide. The two 
isomers have been isolated, one of which is coloured 
and the other colourless.—Mlle. H. Van Risseghem : 
B-Pentene and scme of its derivatives.—G. Chavanne : 
._ The ethylene isomerism of the a-bromopropenes.— 
Mme. E. Bloch: The modifications produced in the 
structure of roots and stems by an external com- 
pression. In all plants grown under compression 
there is an abundant liquefication of the medullary 
parenchyma.—F. Gérard: Three new species of 
Chlanacee.—P. Hariot: Two new Chytridiacez.—J. 
Tissot : The mechanism of the inactivation of sera by 
dialysis. The conditions governing the dissociation of 
the soaps in the serum.—H. Violle: The pathogeny of 
cholera. The cholera bacillus only develops in a 
limited zone of the intestine, and only then if this 
zone is free from all biliary secretion. The liver is 
thus one of the natural defences of the body against 
cholera.—Th. Nogier and Cl. Regaud: The decrease 
in the radio-sensibility of malignant tumours treated 
with successive doses of X-rays. Auto-immunisation 
against X-rays.—M. Lécaillon: The phenomena of 
natural rudimentary parthenogenesis produced in 
Turtur risorius.—H. Stassano and M. Gompel: The 
considerable bactericidal power of mercuric iodide. 
Mercuric iodide has much greater power in killing 
bacteria than either mercuric cyanide, benzoate, or 
chloride. It is ten times as active as 
sublimate.—A. Fernbach and M. Schoen: New observa- 
tions on the production of pyruvic acid by yeast.— 
Jean Groth: The Sierra Morena.—M. Dalloni: The 
tectonic of the Catalan Pyrenees and the supposed 
‘“nappe de Montsech.’’—Léon Lutaud: The raised 
beaches of the coast of Estérel.—Robert César-Franck : 
The relations between the geological constitution of 
the Isle of Wight and the form of its coast line.— 
Philippe Flajolet: Perturbations of the magnetic de- 
clination at Lyons (Saint Genis Laval) during the first 
quarter of 1914. 
NO. 2329, VOL. 93| 
corrosive | 
| Browne. 
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