SCIENCE
AN INTRODUCTION TO THE STUDY OF CYTOLOGY. By L. Doncaster, Fellow of King's College, Cambridge; Derby Professor of Zoology in the University of Liverpool. Cambridge University Press. 21s.
THE FOUNDATIONS OF EINSTEIN'S THEORY OF GRAVITATION. By Erwin Freundlich. Cambridge University Press. 5s.
THE THEORY OF THE IMAGINARY IN GEOMETRY. By J. L. S. Hatton, Professor of Mathematics and Principal of East London College. Cambridge University Press. 18s.
THE PRINCIPLES OF AEROGRAPHY. By Alexander McAdie. Harrap. 21s.
COLLECTED SCIENTIFIC PAPERS. By John Henry Poynting. Cambridge University Press. 37s. 6d.