Principia Mathematica. By Alfred North Whitehead, 

 Sc.D., F.R.S., Felloiv and late Lecttirer of Trinity 

 College, Cambridge, and Bertrand Russell, 31. A., F.R.S., 

 Lecturer and late Fellow of Trinity College, Cambridge. 

 Volume II. 



Royal 8vo. pp. xxxiv + 772. Price 30^. net. 

 CONTENTS 

 Prefatory Statement of Symbolic Conventions 

 Part III. Cardinal Arithmetic 



A. Definition and Logical Properties of Cardinal Numbers 



B. Addition, Multiplication and Exponentiation 



C. Finite and Infinite 

 Part IV. Relation Arithmetic 



A. Ordinal Similarity and Relation-Numbers 



B. Addition of Relations, and the product of two relations 



C. The Principle of First Differences, and the multiplication and 



exponentiation of relations 



D. Arithmetic of Relation-Numbers 



Part V. Series ^ ,..,.„. 



A. General Theory of Series '^ ' -■ 



B. On Sections, Segments, Stretches and Derivatives 



C. On Convergence, and the Limits of Functions 



An Elementary Treatise on Statics. By S. L. Loney, 

 M.A., Professor of Mathematics at the Royal Hollotvay 

 College ( University of London), sometime Fellow of Sidney 

 Sussex College, Cambridge. 



Demy 8vo. pp. viii-f 393. Price \is. 

 Extract from the Preface 

 The present work is a companion book to my Dynamics 

 of a Particle and of Rigid Bodies. It is meant to cover the 

 usual course of Statics for Students who are reading for a 

 Decree in Science or Engineering-, and for Junior Students 

 for Mathematical Honours. 



The book starts with the elementary Principles of the 

 subject, but a Student would profit more by its use if he had 

 previously read some elementary work, such as my Elements 

 of Statics. A knowledge of the ordinary processes of the 

 Differential and Integral Calculus is assumed, and also, in 

 soine articles, of the notions of Solid Geometry. 



It will be evident that, in a book of this size, many parts 

 of the subject must be quite untouched, but I have some 

 hopes that, within the limits I have set to myself, the book is 

 fairly complete. 



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