33 NATURE 

in the cold with strong hydrochloric acid, 
chlorohydrate of the allkylsemicarbazide. 
appears to be general, and descriptions are given of 
methyl-, benzyl-, and "ethyl-semicarbazides. —(Echsner 
de Coninck and'M. Gerard: Some basic salicylates.— 
Amé Pictet and Maurice Bouvier: The saturated hydro- 
carbons of vacuum tar. The raw material for this 
work consisted of 60 kilograms of tar distilled from 
one and a half tons of coal under a pressure of 15 to 
20 mm. The unsaturated hydrocarbons were separated 
by means of liquid sulphur dioxide instead of with 
fuming sulphuric acid, as in the preceding note on 
the same subject. Six saturated hydrocarbons have 
been isolated, two being identified with certainty as 
hexahydrodurene and hexahydromesitylene, and the 
remainder are probably homologues of cyclohexane. 
The same hydrocarbons have been isolated by Mabery 
from Canadian and Californian petroleums.—G. 
Murgoci: Rhodusite and abriachanite. These two 
minerals are the extreme ferric terms of the glauco- 
gives the 
‘The method 
phane series.—Const. A. Kténas: The iron minerals of 
igneous origin of eastern Greece and their trans- 
formations.—Stanislas Meunier: Mechanical pheno- 
mena as a factor in the elaboration of crystalline 
rocks.—N. Arabu: Studies on the Tertiary formations 
of the basin of the Sea of Marmora. The distribution 
of the faces in the different stages of the Tertiary; 
sketch of the tectonic of that region.—J. Deprat: The 
intermediate folded zones between Yunnan and Haut- 
Tonkin.—Eugéne Pittard : Comparative anthropometry 
of the Ballxan peoples. 

BOOKS RECEIVED. 
Evolution and the War. By Dr. P. C. Mitchell. 
Pp. xxv+114. (Loudon: J. Murray.) 2s. 6d. net. 
Life-Histories of African Game Animals. By T. 
Roosevelt and E. Heller. Two vols. Vol. i. Pp. 
XXVili+ 420. Vol. ii. Pp. x+421-798. (London: J. 
Murray.) 42s. net. 
Brazil (1913). By J. C. Oakenfull. Pp. viii+604. 
(Frome: Butler and Tanner.) 7s. 6d. net. 
Annuaire Général de Madagascar et Dependances 
(Supplément & l’Annuaire 1914). | (Tananarive : Im- 
primerie Officielle.) 
The Body in Health. By Prof. M. V. O’Shea and 
J. H. Kellogg. Pp. ix+324. (New York: The Mac- 
millan Company; London: Macmillan and Co., Ltd.) 
3s. 6d. 
The Magic 
Pp. xv+111. 
2s. 6d. net. 
The World’s Cotton Crops. 
of Experience. By H. S. Redgrove. 
(London: J. M. Dent and Sons, Ltd.) 
By Prof. J. A. Todd. 
Pp. xiii+460. (London: A. and C. Black, Ltd.) 10s. 
net. 
Short English Poems for Repetition. By C. M. 
Rice. Pp. xv+119. (Cambridge: W. Heffer and 
Sons; tds) ) 1s. ade 
Elements of cee for the Use of Schools and 
Colleges. By Wr, Parkers 3 Bp. 1225 9 (london: 
Longmans a "Co.) 2s. 6d. 
Symbiogenesis. By H. Reinheimer. 
Pp. xxiii+ 425. 
(Knapp, Drewett and Sons, Ltd.) ros. 
éd. net. 
DIARY OF SOCIETIES. 
THURSDAY, May 20. 
Roya Society, at 4.30.—The Corpuscular Radiation Liberated in Vapours 
by Homogeneovs X-Radiation: H. Moore.—The Absorption in Lead 
of y Rays Emitted by Radium B and Radium C: H. Richardson. — 
The Application of Interference Methods to the Study of the Origin of 
Certain Spectrum Lines: T. R. Merton. 
Rovac InstiTuTIon, at 3.—The Movements and Activities of Plants: 
Prof. H. Blackman. 
INSTITUTION OF MINING AND METALLURGY, at 8.—The Physical Condition 
of Cassiterite in Cornish Mill Products: the late J. J. Beringer.—Note on 
the Concentration of Gold in Bottoms in the Converter: H. F. Collins,— 
NO. 2377, VOL. 95] 

[May 20, 1915 

aes Morro Velho Method of Assay of Gold-Bearing Cyanide Solutions : 
D. M. Levy and H. Jones.—The Effect of Different Methods of Crushing 
on the Ash of Coke: F. A. Eastaugh. 
AERONAUTICAL SOCIETY, at 8.30.—Wilbur Wright Memorial Lecture—The 
Rigid Dynamics of Circling Flight : Prof. G. H. Bryan. 
FRIDAY, May 2t. 
Royat InstiTuTION, at 9.—Beauty, Design, and Purpose in Foraminifera : 
E. Heron-Allen, 
SATURDAY, May 22. 
Roya InstTITUTION, at 3.—Colouring Matters of Nature: Dr. M. O. 
Forster. 
TUESDAY, May 25. 
Royat InstiTuTION, at 3.-—Dyes, the Creation of the Chemist: Dr. M. O. 
Forster. 
ZooLocicat Society, at 5.30.—A Blood-sucking Gamasid Mite parasitic 
on Couper’s Snake: S. Hirst.—A List of the Snakes of Madagascar, 
Comoro, Mascarenes and Seychelles : G. A. Boulenger.—Anatomical Notes 
on the Gruiform Birds Avamzus giganteus, Bonap, and Rhinochetus kagu : 
Dr. P. Chalmers Mitchell. 
THURSDAY, May 27. 
INSTITUTION OF ELECTRICAL ENGINEERS, at 8.—Annual General Meeting. 
FRIDAY, May 28. 
Roya InsTITUTION, at 9.—Engineering Problems of Mesopotamia and 
Euphrates Valley : Sir John Jackson. 
INSTITUTION OF PETROL EUM TECHNOLOGISTS, at 8.—The Evolution of the 
Oil Tank-ship: H. Barringer. 
Puysicar Society, at 5.—Numerical Relations between Electronic and 
Atomic Constants: Dr. H. S. Allen.—A Method of Calculating the 
Absorption Coefficients of Homogeneous X-Radiation: H. Moore. Two 
Experiments Illustrating Novel Properties of the Electron Currents from 
Hot Metals: Prof. O. W. Richardson.—High Permeability in Iron: Prof. 
E. Wilson. 
SATURDAY, May 29. 
LinNEAN SOcIETY, at 3.—Anniversary Meeting. 

CONTENTS. PAGE 
Science and the State. By Sir William Ramsay, 
KICHBSUReRGSS 5 = 2 a ae 2 
AgGreateblant Collector >, {ssemt-minenl n-ne 
Applied) Catalysis. By J... deena 
A Text-book) of Efficiency: By@hy) 2 =) i201 
OurzBookshelfii.. .. .. ; 210. UEReen nena Cun iene 
Letters to the Editor:— 
The National Organisation of Scientific Effort.— 
OOIe so. Bled mance SRE 
Osmotics. —The Earl sh Perreiey! F. R. ‘Ss. bea 9 
A Bibliography of Fishes. —Prof, Bashford Dean 
The Use of the Term ‘‘ Pinacoid ” in eae ce 
—Prof, Grenville A. J. Cole . . a0 8 
A Mistaken Butterfly.—Edward A. Martin . A 
Ethnographic Studies in Melanesia. (J//ustrated.) 
Gs as kT 
Dyphus ever. “By R.. T.. Hiv See ic 
An Advisory Council on Industrial iRegearch a0 
Notes): Peo oo FOO ODN oNd «© 
Our Aeeencocall Column: — 
Comet 1915a (Mellish) _ ue nae 
Photographic Determinations of Stellar Parallax 
Report of the Kodaikanal and Madras Observatories 
Astronomy at Hampstead . . _ 
Recent Work in Applied Biology. By G. H. c. 
Mineral Resources of the Philippine Islands . 
University and Educational Intelligence ..... 
Societiesjand?A'cademics) =) -) pam eens 
Books Received MPMPMORERG Sd 0 6 RO a 
Diary of Societies en F ante 
399 
311 
312 
313 
314 
315 
317 
318 
318 
318 
319 
321 
321 
327 
332 
332 
332 
332 
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336 


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