BOOKS RECEIVED 



(^Publishers are requested to fiotify prices) 



Euclid in Greek. Book I, with Introduction and Notes by Sir Thomas L. 

 Heath, K.C.B., K.C.V.O., F.R.S., Sc.D., Hon. B.Sc, Oxford. Cam- 

 bridge : at the University Press, 1920. (Pp. vii + 238.) Price los. net. 

 A book of value and interest to all scientific readers. One never knows 

 how much in the ordinary school books of Euclid is due to the author 

 or to the editor, and of course the Greek text is not available for more than 

 a few. Here we have the First Book set out in full, together with a valuable 

 historical introduction and admirable notes by a very distinguished editor. 



Qualitative Analysis in Theory and Practice. By P. W. Robertson, M.A., 

 Ph.D., Professor of Chemistry, Victoria University College, New Zealand, 

 and D. H. Burleigh, A.R.C.S., D.I.C., B.Sc, Science Master at Eltham 

 College. London : Edward Arnold, 1920. (Pp. 62.) Price 4s. bd. net. 



Logica Matematica. By C. Burali-Forti. Professore ordinario di Geometria 

 analitico-proiettiva nella R. Academia Militare di Torino. Seconda 

 edizione intieramenti rifatta. Milano : Ulrico Hoepli, Editore-Libraio 

 della real Casa, 1919. (Pp. xxxii + 483.) Price L. 9.50. 



The Mathematical Theory of Electricity and Magnetism. By J. H. Jeans, 

 M.A., F.R.S. Third Edition. Cambridge : at the University Press, 

 1915. (Pp. vi + 587.) Price 17s. t>d. net. 



Lectures on the Theory of Plane Curves. Delivered to Post-Graduate Stu- 

 dents in the University of Calcutta. By Surendramohan Ganguli, M.Sc, 

 Lecturer in Pure Mathematics, University of Calcutta. Calcutta : pub- 

 lished by the University, 191 9. (Part I, pp. x + 138 ; Part II, pp. 

 xiii+ 139+ 350.) 



An Elementary Treatise on Differential Equations and their Applications. 

 By H. T. H. Piaggio, M.A., D.Sc, Professor of Mathematics, University 

 College, Nottingham. London : G. Bell & Sons, 1920. (Pp. xvi + 216 

 + XXV.) Price 125. net. 



Report on the Quantum Theory of Spectra. By L. Silberstein, Ph.D. 

 London : Adam Hilger, 75a Camden Road, N.W.i, 1920. (Pp. 42.) 

 Price 5s. net. 



The Sumner Line or Line of Position as an aid to Navigation. By George 

 C. Comstock, and Black Reduction Forms for Line of Position Observa- 

 tions. New York : John Wiley & Sons ; London : Chapman & Hall, 

 1919. (Pp. 70.) Price 65., and Reduction Forms 40 cents net. 



A Primer of Air Navigation. By H. E. Wimperis, M.A. (Cantab.), Head of 

 Air Navigation Research Section, Air Ministry. London : Constable & 

 Co., 10 Orange Street, Leicester Square, W.C.2, 1920. (Pp. xiv + 128.) 

 Price 85. net. 



166 



