MATHEMATICS. q 



written for those who desire to become mathematicians. In the 



first nine chapters Prof. Kelland endeavours to illustrate and 

 enforce the principles of the science ; the last chapter, by Prof 

 7 ait, is an introduction to the application of Quaternions to the 

 region beyond that of pure geometry. 



Morgan.— A COLLECTION OF PROBLEMS AND EXAM- 

 PLES IN MATHEMATICS. With Answers. By H. A. 

 Morgan, M.A., Sadlerian and Mathematical Lecturer of Jesus 

 College, Cambridge. Crown Svo. cloth. 6s. 6d. 



Newton's Principia. — 4 to. cloth. 31^. 6d. 



It is a sufficient guarantee of the reliability of this complete edition of 

 Nezotoris Principia that it has been pri)ited for and under the ca/e 

 of Professor Sir William Thomson and Professor Blackburn, oj 

 Glasgow University. 



Parkinson.— A TREATISE ON OPTICS. By S. Parkin- 

 son, D.D., F. R.S., Fellow and Tutor of St. John's College, 

 Cambridge. Third Edition, revised and enlarged. Crown Svo. 

 cloth. 1 or. 6d. 



Phear.— ELEMENTARY HYDROSTATICS. With Numerous 

 Examples. By J. B. Phear, M. A., Fellow and late Assistant Tutor 

 of Clare Coll. Cambridge. Fourth Edition. Cr. Svo. cloth. $s. 6d. 



Pratt. — A TREATISE ON ATTRACTIONS, LAPLACE'S 

 FUNCTIONS, AND THE FIGURE OF THE EARTH. 

 By John H. Pratt, M. A., Archdeacon of Calcutta, Author of 

 "The Mathematical Principles of Mechanical Philosophy." Fourth 

 Edition. Crown Svo. cloth. 6s. 6d. 



Routh. — AN ELEMENTARY TREATISE ON THE DYNA- 

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 numerous Examples. By Edward John Routh, M.A., late 

 Fellow and Assistant Tutor of St. Peter's College, Cambridge ; 

 Examiner in the University of London. Second Edition, enlarged. 

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Tait and Steele.— DYNAMICS OF A PARTICLE. With 

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Thomson.— PAPERS ON ELECTROSTATICS AND MAG- 

 NETISM. By Professor Sir William Thomson, F.R.S. 

 Svo. 18*. 



11 In the whole range of modem mental activity and resetrch, there 

 is perhaps nowhere to be found any such amount of purely scien- 

 tific matter, free from all speculation zohatever, as is to be found 

 in these diversified and masterly papers on the nearly allied 

 subjects of electricity and magnetism. There is scarcely a paper in 

 all the forty -two in which there is not something interesting, 

 written in a clear, unambiguous, and manly style." — Scotsman. 



