Mathematical Works published by Macmillan and Co. 



A Treatise on Optics. By the Rev. S. PARKINSON, 



B.D. Crown 8vo. New Edition, 10*. <W. 



On the Undulatory Theory of Optics. By GEORGE 



BIDDELL AIRY, M.A. LL.D. D.C.L. Astronomer Royal. New Edition. 

 Crown 8vo. 6*. 6d. 



Elementary Treatise on Partial Differential Equa- 

 tions. By G. B. AIRY. With Diagrams. Crown 8vo. 5s. <></. 



Treatise on Astronomy. By HUGH GODFRAY. 8vo, 



Plane and Spherical Trigonometry. With the con- 

 struction and use of Tables of Logarithms. By J. C. SNOWBALL. Tenth 

 Edition. Crown 8vo. 7s. 6rf. 



Geometrical Treatise on Conic Sections. With 



Examples. By W. H. DREW. Third Edition. Crown 8vo. 4*. 6d. 



Solutions to the Problems in Drew's Conic Sections. 



Crown 8vo. 4*. 6d. 



Geometrical Conies, including Anharmonic Ratio 



and Projection. With Examples. By C. TAYLOR. Crown 8vo. Is. 6rf. 



MACMILLAN AND CO. LONDON. 



