Just published, 1 vol. 8vo, cloth, price 12s., 

 A MATHEMATICAL TREATISE ON THE MOTION OF PROJECTILES, 



Founded chiefly on the results of Experiments made with the Author's 

 Chronograph. 



By FRANCIS BASHFORTH, B.D., 



Professor of Applied Mathematics to the Advanced Class of Royal Artillery 

 Officers, Woolwich, and late Fellow of St. John's College, Cambridge. 



London: Asher and Co., 13 Bedford Street, Covent Garden, W.C. 

 Berlin : 1 1 Unter den Linden. 



Just published, in 4to, on fine paper, with Six Plates, price 3s. 6d., 



Part XL of 



RELICtUlJE AQUITANIOE, 



Being Contributions to the Archaeology and Palaeontology of Perigord and the 



adjoining Provinces of Southern France. 



By EDOUARD LARTET and HENRY CHRISTY. 



Edited by T. RUPERT JONES, F.R.S., F.G.S.,&c, 

 Professor of Geology, Royal Military and Staff Colleges, Sandhurst. 



This Work will be illustrated with numerous well- executed Lithographic Plates 

 of the Weapons, Tools, and Ornamental Work, in Stone, Bone, and Horn, of the 

 Prehistoric Cave-dwellers of Perigord -, also of the Osseous Remains of the Con- 

 temporaneous Animals. 



To be completed in about 15 Parts (price 3s. 6d. each). 



WiiuLiAMS aad Norgate, 14 Henrietta Street, Covent Garden, London, and 

 20 South Frederick Street, Edinburgh ; J. B. Bailliere & Fils, Rue Haute- 

 feuille, Paris. 



In One Volume, 8vo, with numerous Illustrations, price 21s. 

 GEOMETRIC TURNING; 



Comprising a Description of the new Geometric Chuck constructed by Mr. Plant, 

 of Birmingham, with Directions for its use, and a Series of Patterns cut by it, 

 with Explanations of the mode of producing them, and an account of a New Pro- 

 cess of Deep Cutting and of Graving on Copper. 



By H. S. SAVORY. 

 London : Longmans, Green, and Co., Paternoster Row. 



NEW EDITION OF LLOYD'S WAVE-THEORY OF LIGHT. 

 Now ready, in 8vo, price 10s. 6d. cloth, 

 ELEMENTARY TREATISE ON THE WAVE-THEORY OF LIGHT. 

 By HUMPHREY LLOYD, D.D., D.C.L., 



Provost of Trinity College, Dublin, and formerly Professor of Natural Philosophy 



in the University. 



Third Edition, revised and enlarged. 



London : Longmans, Green, and Co., Paternoster Row. 



NEW EDITION OF WEBB'S CELESTIAL OBJECTS. 



In crown 8vo, with Map, Plate, and Woodcuts, price /s. 6d. 



CELESTIAL OBJECTS FOR COMMON TELESCOPES. 



By the Rev. T. W. WEBB, M.A., F.R.A.S., 



Incumbent of Hardwick, Herefordshire. 



The Third Edition, revised and adapted to the Present State of Sidereal Astro- 

 nomical Science. 



London : Longmans, Green, and Co., Paternoster Row. 



[ADVERTISEMENTS continued on 3rd page of Covir. 



