Supplement to “ Nature,” January 27, 1923 _ ili 

Recent Scientific and Technical Books 
Volumes marked with an asterisk have been received at ‘‘ NATURE” Office. 
Mathematics 
Baker, H.F. Principles of Geometry. Vol. 2: Plane 
Geometry, Conics, Circles, Non-Euclidean Geometry. 
Demy 8vo. Pp. xv+243. (Cambridge: At the Uni- 
versity Press, 1922.) 15s. net.* 
Bruhns, Dr., Edited by. A New Manual of Logarithms 
to Seven Places of Decimals. Thirteenth stereotype 
edition. Sup. Roy. 8vo. Pp. xxiv+61ro. (London: Chap- 
man and Hall, Ltd., 1922.) 12s. 6d. net.* 
Coventry, W. B. The Racing Eight: Notes on its 
Design and Propulsion. Cr. 8vo. Pp. iv+39. (Cam- 
bridge: W. Heffer and Sons, Ltd.; London: Simpkin, 
Marshall and Co., Ltd., 1922.) 3s. 6d. net.* 
Goursat, E. Lecons sur le probléme de Pfaff. 8vo. 
Pp. viii+386. (Paris: J. Hermann, 1922.) 30 francs. 
Macgregor, D.C. Mathematics and Physical Science 
in Classical Antiquity. Translated from the German of 
J. L. Heiberg. (Chapters in the History of Science, IT.) 
Cr. 8vo. Pp. 110. (London: Oxford University Press, 
1922.) 2s. 6d. net.* 
Moch, G. Initiation aux théories d’Einstein. 
théque Larousse.) 8vo. Pp. 160. 
1922.) 4 francs. 
Moreux, L’Abbé Th. Pour comprendre la géométrie 
lane. Feap. 8vo. Pp. 252. (Paris: G. Doin, 1922.) 
francs. 
Neville, E. H. Prolegomena to Analytical Geometry 
in Anisotropic Euclidean Space of Three Dimensions. 
Imp. 8vo. Pp. xxii+368. (Cambridge: At the Uni- 
versity Press, 1922.) 30s. net.* 
Otzen, R., Herausgegeben von. Handbibliothek fir 
Bauingenieure: Ein Hand- und Nachschlagebuch fir 
Studium und Praxis. Teil I: Hilfswissenschaften. 
Erster Band: Mathematik. Von H.E. Timerding. 8vo. 
. Vili+242. (Berlin: J. Springer, 1923.) 
Shaw, J. B. Vector Analysis: with Applications to 
Physics. Ex. Cr. 8vo. Pp. v+314. (London, Bombay 
and Sydney : Constable and Co., Ltd., 1922.) 14s. net.* 
Wulf, Le P. Th. La Théorie de la relativité d’Ein- 
stein. Traduit par le P. H. Dopp. 8vo. Pp. 96. 
(Bruxelles: A. Dewett, 1922.) 2 francs. 
(Biblio- 
(Paris: Libr. Larousse, 
Mechanics: Mechanical Engineering 
Aeronautical Research Committee. Reports and 
Memoranda. No. 541: Stability and Resistance Experi- 
ments on a Model of Vickers’ Rigid Airship R.80. 6d. net. 
No. 769: The Calculation of Stresses in a Redundant 
Structure by the Method of Comparison of Deflections, 
with Examples of its Application to Aeroplane Design. 
ts. 6d. net. No. 773: Lateral Control at large Angles of 
Incidence : Yawing and Rolling Moments due to Aileron 
Movement on a complete Model of S.E. 5a. od. net. 
No. 779: Experiments on a Model of Rigid Airship R.32, 
together with a Comparison with the Results of Full-Scale 
Turning Trials and a Consideration of the Stability of the 
Ship. od. net. No. 780: Aerodynamic Pressure on an 
Airship Hull in Curvilinear Flight. 6d. net. No. 781: 
The Motion of Airships under certain imposed Movements 
of the Rudders. 1s. 3d. net. No, 782: Equilibrium of 
R.38 in Circling Flight. 3d. net. No. 784: Seaplane: 
Taking Off and Alighting. 3d. net. No. 785: Experi- 
ments with Model Flying Boat Hulls and Seaplane Floats. 
1s. net. No. 786: An Aerodynamic Theory of the Air- 
screw. od. net. No. 787: Lateral Control of Bristol 
Fighter at Low Speeds: Measurement of Rolling and 
Yawing Moments of Model Wings due to Rolling. Is. 6d. 
net. No. 788: Theoretical Streamlines round a Joukowsky 
Aerofoil. 3d. net. No. 789: Preliminary Report on the 
Properties of commercially Pure Nickel as a Standard 
Material for Fatigue Investigations. 9d. net. No. 790: 
On the Determination of the Stresses in Braced Frame- 
works: Part 1, The Effect of Shear upon a Framework of 
Uniform Rectangular Cross-section. 6d. net. No. 791: 
On the Determination of the Stresses in Braced Frame- 
works: Part 2, The Effect of Axial Loading, Torsion, ,; Pp. xxxii +129. 
Flexure, and Shear upon a Braced Tube of any Uniform 
Cross-section. 6d.net. (London: H.M. Stationery Office, 
1922.) 
Batson, R. G., and Hyde, J. H. Mechanical Testing : 
a Treatise in Two Volumes. Vol. 2: Testing of Prime 
Movers, Machines, Structures and Engineering Apparatus. 
(Directly-Useful Technical Series.) Demy 8vo. Pp. xi+ 
446. (London: Chapman and Hall, Ltd., 1922.) 25s. net.* 
Bouasse, H. Hydrostatique: Manomeétres, _baro- 
métres, pompes: Equilibre des corps flottants. (Biblio- 
théque scientifique de l'Ingénieur et du Physicien.) 8vo. 
Pp. xxiv +480. (Paris: Libr. Delagrave, 1923.) 30 francs. 
Burley,G.W. The Principles and Practice of Toothed 
Gear Wheel Cutting. 8vo. Pp. 468. (London: Scott, 
Greenwood and Son, 1922.) 25s. net. 
Cunningham, B. A Treatise on the Principles and 
Practice of Dock Engineering. Third edition, revised and 
enlarged. Roy. 8vo. Pp. 618. (London: C. Griffin and 
Co., Ltd., 1922.) 42s. net. 
Hort, W. Technische Schwingungslehre: Ein Hand- 
buch fiir Ingenieure, Physiker und Mathematiker bei der 
Untersuchung der in der Technik angewendeten perio- 
dischen Vorgange. Zweite, vdllig umgearbeitete Auflage. 
(Berlin: J. Springer, 1922.) 
Kershaw, J. W. Elementary Internal Combustion 
Engines. Secondedition. Cr.8vo. Pp.vii+212. (Lon- 
don : Longmans, Green and Co., 1922.) 5s. net. 
Manville, O. Production économique de la vapeur. 
Roy. 8vo. Pp. vii+4o7. (Paris: G. Doin, 1923.) 25 
francs.* 
Ministére de l’Agriculture. Direction générale des 
Eaux et Foréts. (2° partie.) Service des grandes forces 
hydrauliques. (Région du Sud-Ouest.) Imp. 8vo. Tome 
2 bis, Fascicule E: Résultats obtenus pour les bassins de 
l’Ariége et de l’Aude. iv+63 charts. Tome 7, 
Fascicule E-1: Résultats obtenus pour le bassin de 
l’Ariége pendant les années 1917 et 1918. Pp. 49+42 
charts. Tome 7, Fascicule E-2: Résultats obtenus pour 
le bassin de l’Aude pendant les années 1917 et 1918. Pp. 
26+10+26 charts. Tome 7, Fascicule F: Résultats 
obtenus pour les bassins de l’Agly, de la Tét, du Tech et 
du Ségre pendant les années 1917 et 1918. Pp. 73+72 
charts. (Paris: Ministére de l’Agriculture, 1922.)* 
Motor-Cycles and How to Manage Them. Twenty- 
third edition, revised and rewritten by the staff of the 
“Motor Cycle.” Gl. 8vo. Pp. 292. (London: Iliffe 
and Sons, Ltd., 1922.) 2s. 6d. net. 
North, S. H. Oil Power. (Pitman’s Common Com- 
modities and Industries.) Cr. 8vo. Pp. ix+122. Lon- 
don: Sir I. Pitman and Sons, Ltd., 1922.) 3s. net.* 
Okill, J. Internal-Combustion Engines: a Review of 
the Development and Construction of Various Types and 
their Economic Superiority for Modern Power Purposes. 
(Pitman’s Common Commodities and Industries.) Cr. 
8vo. Pp. xi+126. (London: Sir I. Pitman and Sons, 
Ltd., 1922.) 3s. net.* 
Orton, A. The Diesel Engine: an Introductory Treat- 
ment of the Principles of Working, Construction, and 
Operation of Diesel Engines, for Students, Mechanics and 
Others. (Pitman’s Technical Primers.) Feap. 8vo. Pp. 
x+111. (London: Sir I. Pitman and Sons, Ltd., 1923.) 
2s. 6d. net.* 
Ross, J. P. Mechanical Engineering Detail Tables. 
Cr. 8vo. Pp. 209. (London: Sir I. Pitman and Sons, 
Ltd., 1922.) 7s. 6d. net. 
Wittenbauer, F. Aufgaben aus der technischen 
Mechanik. Band III: Flissigkeiten und Gase. Dritte, 
vermehrte und verbesserte Auflage. Pp. viii +390. 
(Berlin: J. Springer, 1923.) 
Physics: Electrical Engineering 
Bjerknes, V. Untersuchungen iiber elektrische Re- 
sonanz. Sieben Abhandlungen aus den Jahren 1891-1895. 
Mit einer Einleitung dem Andenken an H. Hertz gewidmet. 
(Leipzig: J. A. Barth, 1922.) 
