MATHEMATICS. 



and they have there tried to lay a good foundation on which to 

 build, if any reader should wish to pursue the science beyond the 

 limits to which the work extends. 



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

 Lecturer at Pembroke College, Cambridge : 



A TREATISE ON ASTRONOMY, for the Use of Colleges and 

 Schools. 8vo. cloth. I2j. 6d. 



This book embraces all those branches of Astronomy which have, from 

 time to time, been recommended by the Cambridge Board of Mathe- 

 matical Studies : but by far the larger and easier portion, adapted 

 to the first three days of the Examination for Honours, may be read 

 by the more advanced pupils in many of our schools. The author's 

 aim has been to convey clear and distinct ideas of the celestial phe- 

 nomena. " It is a working book," says the Guardian, "taking 

 Astronomy in its proper place in the Mathematical Sciences. . . . 

 It is a book which is not likely to be got up unintelligently." 



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. 



These pages will, it is hoped, form an introduction to more recondite 



works. Difficulties have been discussed at considerable length. The 



selection of the method follmved with regard to analytical solutions, 



which is the same as that of Airy, Herschel, etc., was made on 



account of its simplicity ; it is, moreover, the method which has 



obtained in the University of Cambridge. "As an elementary 



treatise and introduction to the subject, we think it may justly claim 



to supersede all former ones.'" London, Edinburgh, and Dublin 



Phil. Magazine. 



Green (George). MATHEMATICAL PAPERS OF THE 



LATE GEORGE GREEN, Fellow of Gonville and Caius 



College, Cambridge. Edited by N. M. FERRERS, M.A., Fellow 



and Tutor of Gonville and Caius College. 8vo. 15^. 



The publication of this book may be opportune at present, as several 



of the subjects with which they are directly or indirectly concerned 



have recently been introduced into the course of mathematical 



study at Cambridge. They have also an interest as being the work 



of an almost entirely self-taught mathematical genius. The Papers 



