——”,* 
a 
May 7, 1914] 
NATURE 
261 
the tides.—Léon and Eugéne Bloch: A new absorp- 
tion spectrum of oxygen in the extreme ultra-violet. 
The absorption of air in the extreme ultra-violet com- 
mences at a wave-length of 1957, and is shown by a 
spectrum of regular bands, most probably belonging 
to oxygen. It is shown that these bands are due to 
absorption and not to fluorescence.—Thadée Peczalski : 
The differential scale of temperatures.—André Léaute : 
The propagation of surges along a heterogeneous 
electric line.—Jean Perrin: The osmotic compressi- 
bility of emulsions considered as fluids with visible 
molecules. In a previous communication it has been 
shown that the gas laws apply to dilute emulsions 
composed of particles of the same magnitude. In the 
present paper this conception is applied to strong 
emulsions, making use of Van der Waals equation.— 
René Constantin: The experimental study of the 
osmotic compressibility of emulsions. | The experi- 
mental work of the preceding paper. The work was 
done with: uniform spherical grains of radius 0-33 p. 
Instantaneous photographs were taken of a column 
of emulsion 3 to 5 thick, with a horizontal micro- 
scope, sufficient time, three to four days, having been 
allowed for a state of equilibrium. Up to a certain 
concentration the fluid follows the law of Van der 
Waals, but above 2-4 per cent. the internal pressure 
diminishes, corresponding to a repulsive action be- 
tween the grains.—A. Portevin: Re-heating and 
annealing after tempering of the alloys of copper and 
tin and copper and zinc.—Georges Baume: Remarks 
on the mechanism of the chemical reaction.—Auguste 
Conduché: The action of chloroform on metallic sul- 
phates. Method of preparation of anhydrous chlorides. 
At temperatures above 300° C. chloroform vapour 
converts the sulphates of various metals into the 
anhydrous chloride. The reaction with copper sulphate 
at 300° C. gives pure cupric chloride; other metals 
require a higher temperature.—Georges Tanret: An 
alkaloid extracted from Galega officinalis. The alka- 
loid is called galigine, and has the composition 
C.H,,N.. The base is crystalline, and gives crystal- 
lised salts. M. Picon: The preparation of pure butine. 
Pure butine (ethylacetylene) has been prepared by the 
action of ethyl iodide upon sodium acetylide in liquid 
ammonia at a temperature of —40° C. It was 
purified by fractional distillation, boils at 8-3°, and 
melts at —137° C. Its density at 11° €. was found 
to be 2-47, as against 2-41 theoretical.—M. Lespieau : 
Some derivatives of octadiine-2:6-diol-1:8. The 
addition products with bromine, iodine, and hydrogen 
are described. Hydrogen in the presence of platinum 
black gives a mixture of the saturated glycol and 
primary octyl alcohol—E. Léger: The optical 
isomerides of homonataloin and of nataloin and their 
reciprocal transformations.—J. L. Vidal: Cultural ex- 
periments on the vine.—Jacob Eriksson: Rust in the 
. seeds of cereals.—R. Marcille: The nitrogenous mate- 
rials of grape must. Both fixed organic nitrogen and 
volatile ammoniacal or amino-nitrogen are present in 
relative and absolute proportions which are extremely 
variable. The quantities are sufficient to ensure regu- 
larity in the fermentation.—E. Maurel: The influence 
of climate and season on food requirements. The 
amount of food required becomes less as the external 
temperature rises, on account of the smaller heat 
losses by the skin.—Etienne Rabaud: Researches on 
telegony. From experiments on mice the author is 
inclined to conclude that telegony is a_ purely 
imaginary phenomenon.—Fred Vlés: Remarks on the 
spectral structur= of hamoglobin substances. There 
are indications that the bands given by this class of 
substances can be represented by a series similar to 
that shown by Deslandres to hold for the nitrogen 
bands.—M. Vasticar: The internal auditive region of 
N@we2g23,. VOL...93| 
Corti’s organ.—O. Laurent: Nervous accidents pro-. 
duced at a distance by projectiles used in war. A 
discussion of the possibility of nervous diseases being 
| produced by shock without actual wounds by the pro- 
jectile.—Gabriel Bertrand ; Silver as a possible stimu- 
lant of growth in Aspergillus niger. In connection 
with the effects of traces of zinc and others metals 
on the growth of moulds, the theory of toxic stimula- 
tion has been put forward. Silver salts are known 
to exert a poisonous action on moulds, and experi- 
ments are here described to see if there is a critical 
concentration at which silver salts exert a stimulating. 
effect on the growth. At no concentration was a 
stimulating effect observed, and the author contends 
that the theory of toxic stimulation is improbable.— 
M. Javillier: The utility of zine for the growth of 
Aspergillus niger, cultivated in deep media. It has 
been alleged that when this mould is cultivated in 
deep instead of in shallow layers the favourable effect 
of zinc vanishes. Experiments are described by the 
author proving that this is not the case.—Em. 
Bourquelot and M. Bridel; The biochemical synthesis 
of the a-monoglucoside of glycol, by the aid of 
a-glucosidase. Starting with a solution of d-glucose, 
glycol, and an aqueous extract of low yeast, only’ the 
monoglucoside was obtained. Its purification and 
properties are given in detail.—Charles Jacob and Paul 
Fallot: The geology ot Montsech, in Catalonia.—F. 
Roman: The Rhinoceridz of the Mainz basin. 
BOOKS RECEIVED. 
The Science Reports of the Tohoku Imperial Uni- 
versity, Sendai, Japan. Second series. (Geology.) 
Voli. Now. Volii,JNoi5. (Sendai; Japan: Zab, 
Maruya and Co., Ltd.) 
Conseil Permanent International pour |’Exploration 
de la Mer. Rapports et Procés-Verbaux des Réunions. 
Vol. xx. Rapports. Pp. iv+228 Bulletin Statis- 
tique des Péches Maritimes des Pays du Nord de 
Europe. Vol. vii. Pour l’Année 1910. (Copen- 
hague: F. Host et Fils.) 
New Zealand. Department of Mines. Geological 
Survey Branch. Bulletin No. 16 (new series). The 
Geology of the Aroka Subdivision, Hauraki, Auck- 
land. By J. Henderson, assisted by J. A. Bartrum. 
Pp. vii+127+plates. (Wellington: J. Mackay.) 
Canada. Department of Mines. Geological Sur- 
vey Guide Books. No. 1 (two parts), Nos. 2, 3, 4, 
5, 8 (three parts), 9 and 10. (Ottawa: Government 
Printing Bureau.) 
The Principles of Inorganic Chemistry. - By W. 
Ostwald. Translated by Prof. A. Findlay. Fourth 
edition. Pp. xxxiii+836. (London: Macmillan and 
Cas,, ids) a aisss mete 
Bulletin of the Argentine Meteorological Office. 
No. 2. First part. The Laws of the Evaporation of 
Water from Pans, Reservoirs and Lakes, Sand, Soils, 
and Plants. - By Prof. F: H. Bigelow. Pp. 147. 
No. 3. The Thermodynamics of the Circulation and 
the Radiation of the Earth’s Atmosphere. By Prof. 
F. H. Bigelow. Pp. 106. (Buenos Aires.) 
Elementary Theory of Equations. By Prof. L. E. 
Dickson. Pp. v+184. (New York: J. Wiley and 
Sons, Inc.; London: Chapman and Hall, Ltd.) 
7s. 6d. net. 
Cape Astrographic Zones. Vol i. Commenced 
under the direction of Sir David Gill. Completed and 
prepared for press under the supervision of S. S. 
Hough. Pp. li+430. (London: H.M.S.O.; Wyman 
and Sons, Ltd.) rss. 
Manual of the New Zealand Mollusca. By H. 
Suter. Pp. xxilit+1120. (Wellington, N.Z.: J. 
Mackay.) 
