i 4 ED VCATIONAL BOOKS. 



Todhunter (I.) continued. 



PLANE TRIGONOMETRY. For Schools and Colleges. Fifth 



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KEY TO PLANE TRIGONOMETRY. Crown 8vo. 10*. 6d. 

 A TREATISE ON SPHERICAL TRIGONOMETRY. Third 



Edition, enlarged. Crown 8vo. cloth. 45-. 6d. 

 PLANE CO-ORDINATE GEOMETRY, as applied to the Straight 



Line and the Conic Sections. With numerous Examples. Fifth 



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 A TREATISE ON THE DIFFERENTIAL CALCULUS. With 



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A TREATISE ON THE INTEGRAL CALCULUS AND ITS 

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EXAMPLES OF ANALYTICAL GEOMETRY OF THREE 



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A TREATISE ON ANALYTICAL STATICS. With numerous 



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A HISTORY OF THE MATHEMATICAL THEORY OF 

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RESEARCHES IN THE CALCULUS OF VARIATIONS, 

 principally on the Theory of Discontinuous Solutions i an Essay 

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A HISTORY OF THE MATHEMATICAL THEORIES OF 

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 advance has been made in the past . . . It is with unminghd satisfaction 

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AN ELEMENTARY TREATISE ON LAPLACE'S, LAME'S, 

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Wilson (J. M.) ELEMENTARY GEOMETRY. Books 

 I. II. III. Containing the Subjects of Euclid's first Four Books. 

 New Edition, following the Syllabus of the Geometrical Associa- 

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