lo CHARLES GRIFFIN & COM PANTS 



DALLAS (W. S., F.L.S.) : 



A rOPULAR HISTORY OF THE ANIMAL CREATION: 

 The Habits, Structure, and Classification of Animals. With coloured 

 Frontispiece and many hundred Illustrations. New Edition. Crown 8vo. 

 Cloth, 8/6. 



DOUGLAS (John Christie, Mem. Soc. Tel. Eng., 



East India Govt. Telegraph Department, &c.) : 



A MANUAL OF TELEGRAPH CONSTRUCTION. For the use 

 of Telegraph Engineers and others. With numerous Diagrams. Crown 

 8vo. Cloth, bevelled, 15/. 



*^* Secotuf Edition. Published -tvith the approval of the Director- General 

 of Telegraphs in India. 



GENERAL CONTENTS. 



Part I. — General Principles of Strength and Stability : 

 with the Strength of Materials. 



I Part II. — Properties and Applications of Materials, with 



Specifications. 



Part III. — Telegraph Construction, Maintenance, and 

 Organisation, treating of the Application of the Information 

 conveyed in Parts I. and II. to the case of Combined Structures; 

 including the Construction of Overground, Subterranean, and 

 Subaqueous Lines ; Office Fittings ; Estimating ; Organisation, 

 &c. 



" Mr. Douglas deserves the thanks of Telegraphic Engineers for the excellent ' Manual ' 

 now before us ... he has ably supplied an e.xisting want . . . the subject is 

 treated with great clearness and judgment . . . good practical information, given in 

 a clear, terse style." — Engineering. 



"The amount of information given is such as to render this volume a most useful 

 guide to any one who may be engaged in any branch of Electric Telegraph Engineer- 

 ing." — Atheno'um. 



"Calculated to be of great service to Telegraphic Engineers."— /rt7«. 



DUPRE (Auguste, Ph. D., F.R.S., Prof, of 



Chemictry at the Westminster Hospital) and HAKE (H. W., Ph. D., 

 F.C.S., of Queenwood College) : 



A MANUAL OF CHEMISTRY, Organic and Inorganic, for the use 

 of Students. (In preparation). 



GRIFFIN (John Joseph, F.C.S.) : 



CHEMICAL RECREATIONS: A Popular Manual of Experimental 

 Chemistry. With 540 Engravings of Apparatus. Tenth Edition. Crown 

 4to. Cloth. 



Part I. — Elementary Chemistry, 2/. 



Part II. — The Chemistry of the Non-Metallic Elements, including a 

 Comprehensive Course of Class Experiments, 10/6. 

 Or, complete in one volume, cloth, gilt top, . . 12/6. 



