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DZIOBEK. Mathematical Theories of Planetary Motions. By Dr. 

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The determination of the motions of the heavenly bodies is an important problem 

 in and for itself, and also on account of .the influence it has exened on the develop- 

 ment of mathematics It has engaged the attention of the greatest mathematicians, 

 and, in the course of their not altogether successful attempts to solve it. they have 

 displayed unsurpassed ingenuity. '1 he methods devise^ by them have proved use- 

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 and receiving a finished clearness from Lagrange. is especially indebted to this 

 problem, and in turn, analjtical mechanics has been so suggestive in method as to 

 determine largely both the direction and rapidity of the advancement of mathemat- 

 ical science. 



Hence, when it is desired to illustrate the abstract theories of analytical mechan- 

 ics, the profundity of the mathematics of th* problem of the motions of the 

 heavenly bodies, its powerful influence on the historical development of this 

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This work is intended not merely as an introduction to the special study of 

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FORD. Classification of the Most Important Muscles of the Human 

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FRANCOIS. Les Aventures Du Dernier Abencerage Par Chateaubri- 

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