IN THE SAME SERIES 



COAL. By JAMES TONGE, 

 M.I.M.B., F.G.S., &c., Lecturer 

 on Mining at A'ictoria Univer- 

 sity, Manchester. 



NATURAL SOURCES OF 

 POWER. By ROBERT S. 

 BALL, B.Sc., A.M.I.C.TC. 



PATENTS, TRADE MARKS, 

 AND DESIGNS. By KEN- 

 NETH R. SWAN, B.A. (Oxon). 

 of the Inner Temple. Barrister- 

 at-Law. 



TIMBER. By J. R. BATERDEN, 

 A.M.I.C.E. 



THE CHEMISTRY OF 

 BUILDING MATERIALS. 



By ALAN MUNBY. A. R.I. B.A. 

 ETC. 



See complete jmmjtectiis. 



