Lectures on the Differential Geometry of Curves 

 and Surfaces. By A. R. Forsyth, ScD., LL.D., 

 Math.D., F.R.S., sometime Sadlerian Professor of Pure 

 Alathcmatics hi the U^iiversity of Cambridge. 



Large Royal 8vo. pp. xxiv + 526. Price 21s. net. 



Extract fom the Pre/ace 



The material of the present volume consists of the sub- 

 stance of lectures delivered, from time to time, during my 

 tenure of the Sadlerian professorship of pure mathematics in 

 the University of Cambridge. The last occasion, when such 

 lectures were given by me, was during the Michaelmas Term 

 of 1909. 



As the volume does not pretend to be a complete treatise 

 on differential geometry, and as it is restricted to the contents 

 of my lectures, readers will find that not a few sections of the 

 vast range of the subject are discussed only shortly and that 

 some are left undiscussed. In lectures, my aim was to 

 expound those elements with which eager and enterprising 

 students should become acquainted ; they could thus, in my 

 opinion, be best prepared for the penetrating consideration, 

 which is suited for the private study rather than for the 

 lecture-room or the e.xamination-room. 



One of my ideals, in lecturing to students, was to provide 

 them with some of the instruments for research ; consequently 

 this volume is mainly intended for students who, later, may 

 devote themselves to original work. 



A Shorter Geometry. By C. Godfrey, M.V.O., M.A., 

 Head Master of the Royal Naval College, Osborne, and 

 A. W. Siddons, M.A., Assistant Master at Harrow 

 School. 



Crown 8vo. pp. xxii + 302. Price is. 6d. Or in four parts: — Part I, Geometry 

 for Beginners, is. Parts II, III, and IV, lod. each. 



Notes and Ansvoers to Exercises in A Shorter 

 Geometry. By C. Godfrey, M. V.O., M.A., and A. W. 

 Siddons, M.A. 



Crown 8vo. pp. iv + i6. Paper covers. Price bd. 

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