32 CHARLES GRIFFIN 6 CO.'S PUBLICATIONS, 



FOSTER (C. Le Neve, D.Sc., Professor of Mining, 



Royal College of Science; H.M. Inspector of Mines, Llandudno) : 



ORE AND STONE MINING (A Text-Book of). With numerous 

 Illustrations. Large Crown 8vo. Cloth. [Shortly. 



GRIFFIN'S ELECTRICAL PRICE-BOOK : 



For the Use of Electrical, Civil, Marine, and Borough Engineers, Local 

 Authorities, Architects, Railway Contractors, &c., &c. Edited by 

 H. J. DOWSING, M.lNST.E.E., &c. In Crown 8vo. Cloth. [At Press. 



GRIFFIN (John Joseph, F.CS.) : 



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. 



GURDEN (Richard Lloyd, Authorised Surveyor 



for the Governments of New South Wales and Victoria) : 



TRAVERSE TABLES : computed to Four Places Decimals for every 

 Minute of Angle up to 100 of Distance. For the use of Surveyors and 

 Engineers. Second Edition. Folio, strongly .half-bound, 2I/. 



%* Published with Concurrence of the Surveyors- General for New South 

 Wales and Victoria. 



" Those who have experience in exact SURVEY-WORK will best know how to appreciate 

 the enormous amount of labour represented by this valuable book. The computations 

 enable the user to ascertain the sines and cosines for a distance of twelve miles to within 

 half an inch, and this BY REFERENCE TO BUT ONE TABLE, in place of the usual Fifteen 

 minute computations required. This alone is evidence of the assistance which the Tables 

 ensure to every user, and as every Surveyor in active practice has felt the want of such 

 assistance, few knowing of their publication will remain without them." Engineer. 



LONDON: EXETER STREET, STRAND. 



