452 
functions with real variables.—Ph. Glangeaud: The 
earthquake of October 12, 1922, in the Creuse and 
the Limousin, and some earthquakes in the north- 
west of the Central Massif. A map of the district 
over which the shocks were felt is given, showing 
also the lines of the faults in the geological strata. 
These earthquakes in the Central Massif are due to 
slipping along the old lines of the faults.—M. Gabriel 
Bertrand was elected a member of the section of 
chemistry in the place of the late H. Georges Lemoine. 
—Georges. Darmois: The local integration of the 
equations of Einstein.—F. Defourneaux: A category 
of polynomials analogous with electrospherical poly- 
nomials.—N. Abramesco: The auto-generation of 
curves.—Henri Milloux: The growth of integral 
functions of finite order and their exceptional values 
in the angles.—Kyrille Popoff: The pendulum of 
variable length.—]J. Haag: The interior problem of 
Schwarzschild, in the case of a heterogeneous sphere. 
—B. Salomon: The gryoscopic analogies of syn- 
chronous and asynchronous electrical machines and 
the transposition into mechanics of certain diagrams 
of electrotechnics—MM. Huguenard, Magnan, and 
A. Planiol: An apparatus giving the instantaneous 
direction of the wind. This is a modified com- 
pensated hot-wire anemometer. By using this and 
the compensated hot-wire instrument for measuring 
wind velocity, both the instantaneous direction and 
velocity of the wind can be recorded on the same 
chart. Examples of such records are reproduced, 
and their bearing on problems of flight without 
motors indicated.—Jean Chazy: A correction derived 
from the theory of relativity to the Newtonian time 
of revolution of the planets.—J. Ph. Lagrula: Test 
of the rapidity realisable in equatorial measurements 
of small-planets with a telescope provided with a 
photo-visual comparator and some additional acces- 
sories.—J. Guillaume: Observations of the sun made 
at the Lyons Observatory during the fourth quarter 
of 1922. The results of the observations taken on 
61 days during this quarter are summarised in three 
tables showing the number of spots, their distribution 
in latitude, and the distribution of the facule in 
latitude.—Henri Béghin and Paul Monfraix: A new 
gyrostatic compass. This instrument, composed of 
a system of three gyrostats, has been specially designed 
to neutralise the deviations produced by the motion 
of the ship—F. W. Klingstedt: The ultra-violet 
absorption spectra of the cresols.—A. Dauvillier : 
The high frequency spectrum of celtium. Reply to 
a criticism by D. Coster and G. Hevesy.—André 
Charriou: The removal of acids from solution by 
precipitates of alumina. A study of the removal 
of chromic acid by aluminium hydroxide, and of 
the means of purifying the precipitate by washing 
with suitable reagents——R. Locquin and Sung 
Wouseng: The preparation of various pinacones 
by the action of alkyl magnesium compounds on 
some a-hydroxy-methyl ketones. Details of a 
generally applicable method for preparing bitertiary 
a-glycols of the type RR’C(OH)—C(OH)R’(CH,).— 
Pauline Ramart: A molecular transposition in the 
pseudo-butyl-diphenylcarbinol series. A study of 
the compounds produced by the action of acetic 
anhydride and acetyl chloride upon the alcohol 
(C.Hs). . C(OH) . C(CH;),—Emile André: The separa- 
tion of methyl oleate and methyl linoleate by frac- 
tional distillation. The separation is difficult, owing 
to the tendency of the linoleate to form polymers.— 
A. Mailhe: The decomposition of the aryl form- 
amides. A new method of preparation of substituted 
ureas. The vapours of formanilide passed over 
finely divided nickel at 400°-410° C. give some aniline 
and diphenylurea. The formotoluides behave similarly. 
NO. 2787, VOL. 111] 
NATURE 

[Marcu 31, 1923 

—Henri Longchambon: The study of the spectrum 
of the triboluminescence of some substances. Crystals 
of tartaric acid when broken give a band spectrum 
of nitrogen similar to that obtained from sugar. 
Crystals of cadmium sulphate, uranium nitrate, and 
fluor spar also show nitrogen bands. The light from 
the uranium salt, which has a colour differing from 
the other, shows the four green fluorescence bands 
of uranium nitrate——E. Schnebelé: The granites 
of the Champ du Feu (Vosges).—Léon Bertrand and 
Antonin Lanquine: The co-ordination and origin 
of the Pyrenees-Provengal structural units in the 
south-west of the Maritime Alps.—Pierre Bonnet: 
The tectonic relations of the gneiss and coal measures 
in the northern Morvan.—Henry Joly: The con- 
stitution of the Jurassic at Torrelapaja and Bordejo 
(Celtiberic chain, provinces of Saragossa and Soria, 
Spain).—E. Bénévent: The mistral on the coast of 
Nice. The freedom of Nice from the mistral is not 
due to its sheltered position, but to its situation 
with respect to the trajectories of the barometric 
minima.—Joseph Lévine: Triatomic hydrogen and 
meteorological depressions.—J. Beauverie: Influence 
of the rainfall during the ‘‘ critical period ” of wheat 
on the yield. Provided the rainfall during the 
“critical period ’’ is below a certain amount, the 
yield of wheat is roughly proportional to the rainfall. 
—A. A. Mendes-Corréa: The proportions of the 
limbs in Portuguese. The Portuguese, from the 
point of view of the proportions of their limbs, are 
of a clearly European type.—Henri Piéron: The 
propagation of luminous stimulation of the retina 
to the cerebral outer layers—Marc Romieu: The 
histological study of the testicle of Ovthagoriscus 
mola.—R. Hovasse and G. Teissier: Peridinians and 
Zooxanthelles.—C. Levaditi and S. Nicolau: The 
filtration of neurotropic ultravirus through collodion 
membranes. The virus of rabies, encephalitis, herpes, 
and neurovaccine can be filtered under pressure 
through collodion membranes. The filtrates vary 
in toxic power; not only from one membrane to 
another, but also according to the nature of the virus. 
Official Publications Received. 
Report of the Commissioner of Education for the Year ended June 30, 
1922. Pp. iii+82. (Washington : Government Printing Office.) 
Report of the Marlborough College Natural History Society (founded 
April 9th, 1864) for the Year ending Christmas, 1922, (No. 71.) Pp. 72+8 
plates. (Marlborongh.) é 
Forest Bulletin No. 51: An Investigation of certain Factors concerning 
the Resin-tapping Industry in Pinus longifolia. By H. G. Champion. 
Pp. 20. (Calcutta: Government Printing Office.) 8 annas. 
Carnegie Institution of Washington. Annual Report of the Director 
of the Department of Terrestrial Magnetism. (Extracted from Year 
Book No. 21 for the Year 1922.) Pp. 266-309. (Washington.) 
Diary of Societies. 
WEDNESDAY, Apriu 4. 
Society or Pupiic ANALYSTS AND OTHER ANALYTICAL CHeMistTs (at 
Chemical Society), at 8.—Dr. 8. White : Physiological Standardisation.— 
B. 8. Evans: An Investigation into the Chemistry of the Reinsch Test 
for Arsenic and Antimony, and its Extension to Bismuth.—Dr. G. W. 
Monier-Williams: The Estimation of Borie Acid in “ Liquid Eggs” and 
other Foodstuffs. 
ENTOMOLOGICAL Society Or LONDON, at 8. 
FRIDAY, Apri 6. : 
Royat Society or Arts (Indian Section), at 4.—G. R. Clarke; Postal 
and Telegraph Work in India. ; Ng 
PaILoLocicat Society (at University College), at 5.30.—Prof. W. A. 
Craigie : Dictionary Prospects. 
INSTITUTE OF MARINE ENGINEERS, Inc., at 6,—Annual Meeting. 
SATURDAY, APRIL 7. ? y 
Gitsert WuHite Fettowsnie (Annual General Meeting) (at 6 Queen 
Square, W.C.1), at 2.—Sir David Prain : Presidential Address. : 

