EDUCATIONAL BOOKS. 



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



Ijccturer at Pembroke College, Cambridge. 

 A TREATISE ON ASTRONOMY, for the Use of CoUeges and 



Schools. New Edition. 8vo. cloth. I2j. dd. 

 "A working hook, taking Astronomy in its p-oper place in mathe- 

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

 gently. ' ' — Guard i an. 

 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 justly 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, g^. 

 " 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 GonviUe and Caius 

 College, Cambridge. 4r. 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. 



8vo. 8j. 6d. 



" The woi'k 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. (sd. 



Kelland and Tait. — INTRODUCTION TO QUATER- 

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

 F.R.S., fomierly 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 8vo. ^s. 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 MasteratRugby. New Edition. 4to. 2s. 



