526 
Proceedings of the South London Entomological and 
Natural History Society, 1913-14. Pp. xvii+158+ 
plates. (London.) 4s. 
Engineering Geology. By Prof. H. Ries and Prof. 
T. L. Watson. Pp. xxvi+672. (New York: J. Wiley 
and Sons, Inc.; London: Chapman and Hall, Ltd.) 
17S. net. 
Rapid Methods for the Chemical Analysis of Special 
Steels, Steel-making Alloys, and Graphite. By C. M. 
Johnson. Second edition. Pp. xi+437. (New York: 
J. Wiley and Sons, Inc.; London : Chapman and Hall, 
Ltd.) 12s. 6d. net. 
Geological Map of the Caucasus. With Explanatory 
Notes. By Dr. F. Oswald. (London: Dulau and 
Go.) Iss. net. 
Marine Biological Association of the West of Scot- 
land. Annual Report, 1913. Pp. 125. (Glasgow.) 
Nature and Development of Plants. By Prof. C. C. 
Curtis. Third edition. Pp. vii+506. (New York: 
H. Holt and Co.) 2.50 dollars. 
Introductory Geology: a Text-Book for Colleges. 
By T. C. Chamberlin and R. D. Salisbury. Pp. xi+ 
708. (New York: H. Holt and Co.). 2 dollars. 
Die Raumorientierung der Ameisen .und das 
Orientierungsproblem im Allgemeinen. By Dr. R. 
Brun. Pp. viiit+234. (Jena: G. Fischer.) 6 marks. 
Handbuch der vergleichenden Physiologie. Edited 
by H. Winterstein. Lief. 44. Band iii. Erste 
Halfte. Pp. 1761-1922. (Jena: G. Fischer.) 5 
marks. 
U.S. Department of Agriculture. Weather Bureau. 
Report of the Chief of the Weather Bureau, 1912-13. 
Pp. 252. (Washington : Government Printing Office.) 
Union of South Africa. Mines Department. Geo- 
logical Survey. The Geology of the Pilandsberg and 
the Surrounding Country. An Explanation of Sheet 
12. With Sheet 12) By-Dr. W. A. Humphrey. The 
Geology of the Haenertsburg Goldfields and Surround- 
ing Country. An Explanation of Sheet 13. With 
Sheet 13. By A. L. Hall. (Pretoria: Government 
Printing Office.) 2s. 6d. net. 
Bibliotheca Geographica. Jahresbibliographie der 
geographischen Literatur. Band xviii. Jahrgang 
I909 und i910. Pp. xviit+483. (Berlin: W. H. 
Kuhl.) 
Wild Life. Vol. iv. No. ,3. . July. (Kingsway : 
Wild Life Publishing Co.) 2s. 6d. net. 
Elektrische Spektralanalyse chemischen Atome. 
Dr. J. Stark. Pp. viii+ 138. 
5 marks. 
By 
(Leipzig: S. Hirzel.) 
Monistische Bausteine. Edited by W. Breitenbach. 
Zweites Heft. Pp. viii+252. (Brackwede-i-W.: Dr. 
W. Breitenbach.) 3 marks. 
Die Umwelt des Lebens eine Physikalisch-Chemische 
Untersuchung. By Prof. L. J. Henderson. Pp. 
XViii+170. (Weisbaden: J. F. Bergmann.) 5 marks. 
Quarterly Journal of Experimental Physiology. 
Vol. viii. Nos. 2 and 3. Pp. 103-302. (London: C. 
Uviffin and Co., Ltd.) 15s. net. 
Mind. New series. No. 91. July. (London: 
Macmillan and Co., Ltd.) 4s. ; 
Smithsonian Institution. 
Museum. Contributions from the United States 
National Herbarium. | Vol. xviii. Part I. Classifica- 
tion of the Genus Annona. By W. E. Safford. Ep: 
ix+68+plates. (Washington: Government Printing 
Office.) 
NOs2338VOL..92) 
United States National 
NATURE 
[JuLy 16, 1914 
Norwegian Self-Taught, with Phonetic Pronuncia- 
tion. By C. A. Thimm. Pp. 128. (London: E. 
Marlborough and Co.) 2s. 
Machine Construction and Drawing. By A. E. 
Ingham. Book ii. Pp. xiit+180. (London: G. Rout- 
ledge and Sons, Ltd.) 3s: net. 
The Physical Society of London. Report on Radia- 
tion and the Quantum-Theory. By J. H. Jeans. 
Pp. iv+o0. (London: The Electrician Publishing 
Co., Ltd.) 6s. net. 
The Journal of Egyptian Archeology. 
part iii. . July. . Pp. 159-232. 
ploration Fund.) 6s. net. 
Vol: i, 
(London: Egypt Ex- 
CONTENTS. PAGE 
Locomotives and Railways. ByN.J.L...... 501 
Parasittc, Protoz0a | .. Serena en ene) tne 501 
General’ and) Special Physicsm eB yalpiteqn ene 502 
Logic, Teaching and Practice in Mathematics. - 
eS rab eo oli lo. a co 504 
GurBookshelf : jo..ehcihe? Ole ee a eee 505 
Letters to the Editor :— 
Forests and Floods.—Dr,. John Aitken, F.R.S.. . 506 
Proposed International Magnetic and Allied Observa- 
tions during the Total Solar Eclipse of August 21, 
1914 (Civil Date).—Dr. L. A. Bauer. ..... 507 
Asymmetric Haloes with X-Radiation.—W. F. D. 
@hambers). 1.:G. Rankin; Siac ee 507 
The Composition of the Atmosphere.—N. P. 
Campbell oe es anos eee 507 
Elevation of Mouth of Harton Colliery.—Evan 
Moennan’ .,\:.) arcu cee eee chee Pn 507 
The Forthcoming Total Solar Eclipse, August 21. 
(With Maps.) By Dr. William J. S. Lockyer . . 508 
International Fishery Investigations ...,.. 510 
|S CC CE peered Sac Hamat Med cog = 5Ir 
Our Astronomical Column :— 
Gomet Lor4e (NE€vjpmi) yo) serene ee eee 515 
Gomet!1913/ (Delavan)... cecueu ae en 516 
Classification of Nebule and Star Clusters... .. 516 
Watt’s ‘‘ Index of Spectra” cfs aia e Panes 516 
The Napier Tercentenary. By Dr. C. G. Knott. . 516 
The Royal Sanitary Institute Congress at Blackpool 517 
Palissy as a Pioneer of Scientific Method 518 
Explosives. (///ustrated.) By William Macnab 518 
University and Educational Intelligence. ..... 521 
Societies'and: Academies. .=.. 4.) ee eee 521 
moons Received... .: 425 Geass eee e 525 
Editorial and Publishing Offices: 
MACMILLAN & CO., Ltp., 
ST. MARTIN’S STREET, LONDON, W.C. 
Advertisements and business letters to be addressed to the 
Publishers. 
Editorial Communications to the Editor. 
Telegraphic Address: Puusts, LONDON. 
Telephone Number: GERRARD 8830. 
