Space and Geometry. 



This is a discussion of the nature, origin and development of our con- 

 cepts of space, from three points of view, viz., psychology, physics and 

 history. By Dr. Ernst Mach. Price, $1.00. 



Geometric Exercises in Paper Folding. 



An attractive mathematical recreation for young and old. Given in a 

 way to prepare their minds for appreciation of science and art. The 

 book was suggested by kindergarten gift No. VII. Pp. xiv, 148. Cloth. 

 By T. S. Row. Price, $1.00. 



Mathematical Essays and Recreations. 



These essays are written by one of the foremost mathematicians and 

 text-book writers of Germany. They are of a simple and popular 

 character, designed for the general public. By Dr. H. Schubert. Price, 

 cloth, 75c; paper, 30c. 



A History of Japanese Mathematics. 



The scientific attainments of Japan during the past four centuries is 

 one of the marvels of history. This book will show to the West the 

 nature of the mathematics indigenous to Japan and serve to strengthen 

 the bonds that unite the scholars of the world. By David E. Smith 

 and Yoshio Mikami. Price, $3.00. 



A Scrap Book of Elementary Mathematics. 



A collection of notes, recreations, and essays, dealing with the curious 

 properties of numbers, and explaining many mystifying tricks with 

 cards, dice, magic squares and other mathematical diversions. By W. F. 

 White. Price, $1.00. 

 Geometrical Researches on the Theory of Parallels. 



By Nicholaus Lobatschewski. Translated from the original by George 

 Bruce Halsted. Illustrated by numerous geometrical figures. Contains 

 a Non-Euclidean Bibliography. Cloth, $1.25. 



A Budget of Paradoxes. 



This book is written in a popular style, which anyone can appreciate, 

 and which has charmed many thousands of readers during the past 

 half century. By Augustus De Morgan. Edited with full Bibliograph- 

 ical Notes and Index by David Eugene Smith. 2 Vols. Cloth, $3.50 

 per volume. 



Essays on the Life and Work of Newton. 



Augustus De M'organ's three most important essays on the life and 

 work of Newton have here been united, with many critical and biblio- 

 graphical notes, in a single volume. By Augustus De Morgan. Edited, 

 with Notes and Appendices, by Philip E. B. Jourdain, M. A. (Cantab). 

 Cloth, $1.25. 



Contributions to the Founding of the Theory of Transfinite 

 Numbers. 



This volume contains a translation of -the two very important 

 memoirs of Georg Cantor on transfinite numbers which appeared in 

 1895 and 1897. By Georg Cantor. Translated, and provided with an 

 Introduction and Notes, by Philip E. B. Jourdain, M. A. Pages, x, 212. 

 Cloth, $1.25. 



Fundamental Conceptions of Modern Mathematics. 



This work deals, not with the technicalities of mathematics or with its 

 applications as an art, but with a basis for its scientific development. 

 By Robert P. Richardson and Edward H. Landis. Cloth, $1.25 net. 



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