io EDUCATIONAL BOOKS. 



Godfray. Works by HUGH GODFRAY, M.A., Mathematical 



Lecturer at Pembroke College, Cambridge. 

 A TREATISE ON ASTRONOMY, for the Use of Colleges and 



Schools. New Edition. 8vo. cloth. I2s. 6d. 

 "A working book, taking- Astronomy in its proper place in mathe- 

 matical sciences. . . . A book which is not likely to be got up unintelli- 

 gently. " GUARDIAN. 

 AN ELEMENTARY TREATISE .ON THE LUNAR THEORY, 



with a Brief Sketch of the Problem up to the time of Newton. 



Second Edition, revised. Crown 8vo. cloth. $s. 6d. 

 " As an elementary treatise and introduction to the subject, we think it 

 may jiistly claim to supersede all former ones." LONDON, EDIN. AND 

 DUBLIN PHIL. MAGAZINE. 



Hemming. AN ELEMENTARY TREATISE ON THE 



DIFFERENTIAL AND INTEGRAL CALCULUS, for the 

 Use of Colleges and Schools. By G. W. HEMMING, M.A., 

 Fellow of St. John's College, Cambridge. Second Edition, with 

 Corrections and Additions. 8vo. cloth, gs. 

 " There is no book in common use from which so clear and exact a 



knowledge of the principles of the Calculus can be so readily obtained." 



LITERARY GAZETTE. 



Jackson. GEOMETRICAL CONIC SECTIONS. An Elemen- 

 tary Treatise in which the Conic Sections are defined as the Plane 

 Sections of a Cone, and treated by the Method of Projection. 

 By J. STUART JACKSON, M. A., late Fellow of Gonville and Caius 

 College, Cambridge. qs. 6d. 



Jellet (John H.) A TREATISE ON THE THEORY OF 



FRICTION. By JOHN H. JELLET, B.D., Senior Fellow of 

 Trinity College, Dublin ; President of the Royal Irish Academy. 

 Svo. Ss. 6d. 



" The work is one of great research^ and will add much to the already 

 great reputation of its author" SCOTSMAN. 



Jones and Cheyne. ALGEBRAICAL EXERCISES. Pro- 

 gressively arranged. By the Rev. C. A. JONES, M.A., and C. H. 

 CHEYNE, M.A., F. R. A. S., Mathematical Masters of Westminster 

 School. New Edition. i8mo. cloth. 2s. 6d. 



Kelland and Tait. INTRODUCTION TO QUATER- 

 NIONS, with numerous examples. By P. KELLAND, M.A., 

 F.R.S., formerly Fellow of Queen's College, Cambridge; and 

 P. G. TAIT, M.A., formerly Fellow of St. Peter's College^ Cam- 

 bridge ; Professors in the department of Mathematics in the 

 University of Edinburgh. Crown Svo. Js. 6d. 



Kitchener. A GEOMETRICAL NOTE-BOOK, containing 

 Easy Problems in Geometrical Drawing preparatory to the Study 

 of Geometry. For the Use of Schools. By F. E. KITCHENER, 

 M. A., Mathematical Master at Rugby. New Edition. 410. 2s. 



