Jpny-16; 1914 | 
mixed with 1, 3, 4, 5, and 7 per cent. of tellurium, 
and the changes of resistance caused by exposure to 
light measured. Pure selenium was most sensitive to 
white light; with red rays the cell with 1 per cent. 
of tellurium gave the largest change of resistance.— 
M. Boulouch: Systems of dioptres of revolution round 
the same axis.—L. G. Stokvis: The creation of third 
harmonics in alternators as a result of a want of 
equilibrium of the phases.—Ruby Wallach: The mag- 
netic study of iron oxide. Three forms of precipitated 
ferric oxide were studied, and the magnetic suscepti- 
bility of each determined as a function of the tem- 
perature. The results are given graphically.—R. 
Portevin: The velocity of transformation of steels on 
heating and on the specific electrical resistance of 
iron.—P. Chevenard: The specific volumes of nickel 
steels.—H. Guilleminot ; The coefficient of diffusion of 
the X-rays by substances of low atomic weights, 
especially organic substances. Some new facts in 
support of the conclusions given in an earlier paper.— 
André Kling, D. Florentin, and P. Huchet: Properties 
of Recoura’s green chromium sulphate. For twenty- 
four hours after their preparation solutions of the 
green chromium. sulphate contain no sulphate ions 
precipitable by benzidene chlorhydrate; on standing 
sulphate ions are gradually formed, an equilibrium, 
depending on the temperature and concentration, 
being ultimately reached.—L. Tschugaefi and W. 
Ichlopine: Some compounds of monovalent nickel. 
Nickel salts treated with a mixture of sodium hydro- 
sulphite and nitrite give a violet compound, in which 
the nickel appears to be monovalent, since caustic soda 
gives a hydroxide NiOH, convertible by sodium sul- 
phide into Ni,S.—Jacques Joannis : The catalytic influ- 
ence of copper oxide on the combination of oxygen 
with hydrogen. Iron wire at 300° does not act cata- 
lytically on the combination of hydrogen and oxygen, 
but the two gases react in presence of CuO at the 
same temperature. The water vapour formed exerts 
a considerable influence on the catalysis.—A. Villiers : 
Sulphide of manganese and the estimation of this 
metal. A study of the conditions necessary for the 
precipitation of the green form of manganese sulphide. 
—P. Lebeau and M. Picon: Some hydrogenations by 
sodammonium : hydrocarbons. With this reducing 
agent acenaphthene takes up four atoms of hydrogen 
—anthracene two, phenanthrene four, diphenyl four, 
and stilbene two. Amylene, benzene, toluene, and 
cymene, on the other hand, are unaffected.—H. Gault : 
The conversion of oxalacetic ester into a-pyrone deriva- 
tives.—R. Cornubert: The allylcyclohexanols, methyl- 
allylcyclohexanols, propyl- and methylpropyl-cyclo- 
hexanones, and cyclohexanols.—Henri Wohlgemuth : 
Syntheses by means of the mixed organometallic 
derivatives of zinc. The y-chloro-ketones and corre- 
sponding products of hydrolysis.—J. Bougault: The 
dioxytriazines.—Léon Lutaud: The Senonian of 
Mazougues (Var).—-E. A. Martel: The torrential origin 
of peduncular rocks.—Emile Belot: An attempt at the 
verification of the new physical theory of the forma- 
tion of oceans and primitive continents.—M. Cluzet 
and Th. Nogier : The physical analysis of some springs 
of Evaux-les-Bains. The water from three springs 
and the gas from one were examined. Measurements 
are given of the temperature, density, electrical resist- 
ance and radio-activity. The César spring gives a 
high figure for the radium emanation, 80 millimicro- 
curies per litre of gas at the spring.—Henri Lecomte : 
The constitution of the seeds of Musa.—H. Guillemard 
and G, Regnier: Observations on the physiological 
action of the climate at high altitudes.—Paul Godin : 
A series of laws of growth based on 2000 observations 
of children, 300,000 measurements, 1891—1893-1914.— 
N@4233 3, VOL. 93 
NATORE 
| 544- 
oS 
André Mayer and Georges Schaeffer : Constancy of the 
concentration in lipoids containing phosphorus of the 
whole organism; concentration in lipoids in course of 
growth, Application to biometrics—Emile F. 
Terroine : Constancy of concentration of whole organ- 
isms in fatty acids and cholesterol. Evaluation of the 
reserves of fats.—Georges Tanret : Some physiological 
properties of the sulphate of galegine. The alkaloid 
leads to paralysis of the spinal column and nerve 
centres.—Mme. Marie Phisalix: Vaccination against 
experimental hydrophobia by the cutaneous mucous 
secretion of Batrachians, followed by snake poison.— 
E. Bataillon: The electrical conductivity of. the eggs 
of virgin Batrachians.—M. Lécaillon ; The reproduction 
of Galerucella luteolai—Ed. Sergent and H. Foley: 
The period of latency of the spirillum in the bug 
infected with recurrent fever. The virus of recurrent 
fever, besides the spirillum form, can assume another | 
form, very minute, but equally virulent.—L. Lindet ; 
The influence of the mineral content of caseins upon 
their solubility.—Pierre Thomas and Robert C. Moran: 
The proteid substances of Aspergillus niger. 
New SoutH WALES. 
Linnean Society, May 27.—Mr. C. Hedley, vice- 
president, in the chair.—R. J. Tillyard : Some problems 
concerning the development of the wing-venation of 
Odonata. As a result of a study of the tracheation of 
the developing wings of a very large number of 
dragonfly nymphs, several problems have been 
elucidated. It is claimed that the Zygoptera are un- 
doubtedly reduced descendants of broader-winged 
dragonflies. The primary cause of all the peculiarities 
in Odonate wing-venation is traced back to the 
change made by an originally land-dwelling larva to 
fresh water, and the consequent development of a 
flow of oxygen in the tracheal system from the anal 
end of the body.—E. W. Ferguson: Revision of the 
Amycterides. Part iii—Notophes, Amycterus, and 
genera allied to Talaurinus. A number of the smaller 
genera are dealt with, partly for convenience, partly 
because they are mostly related to Talaurinus. 
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Isles. By E. J. S. Lay. Pp. 118. (London: Mac- 
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Physics of the Household. By Prof. C. J. Lynde. 
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483. (London: A. and C, Black.) «2s. 6d, net. 
Boletin do Museu Goeldi (Museu Paranese) de His- 
toria Natural e Ethnographia. Tome viii., 1911-12. 
Catalago das Aves Amazonicas. By Dr. E. Snethlage. 
Pp. iv+531. (Para, Brazil.) 
Index of Spectra. Appendix W. By Dr. W. M. 
Watts. (London: Wesley and Son; Manchester: A. 
Heywood and Son.) 
Summary Report of the Geological Survey. 
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