16 CHARLES GRIFFIN & CO.’S SCIENCE SERIES. 
In Crown 8vo, extra, with Numerous Illustrations. [Shortly. 
GAS AND OIL ENGINES: 
AN NTRODUCTORY TEXT-BOOK 
On the Theory, Design, Construction, and Testing of Internal 
Combustion Engines without Boiler. 
FOR THE USE OF STUDENTS. 
BY 
Pror. W. H. WATKINSON, Wutit. Scu., M.INst.Mkc#.E., 
Glasgow and West of Scotland Technical College. 
Engineering Drawing and Design 
(A TEAT-BOOK OF; 
Srconp Epition. In Two Parts, Published Separately. 
Vou. I.—PRaActTIcAL GEOMETRY, PLANE, AND SOLID. 35S. 
Vou. [].—Macuine anp Encine Drawine anp Desien. 4s. 6d. 
BY 
SEDNEY H. WELLS, Waiee, 
A.M.INST.C.E., A.M.INST.MECH.E., 
Principal of, and Head of the Engineering Department in, the Battersea Polytechnic Institute ; 
ormerly of the Engineering Departments of the Yorkshire College, Leeds ; 
and Dulwich College, London. 
With many Illustrations, specially prepared for the Work, and numerous 
Examples, for the Use of Students in Technical Schools and Colleges. 
“ A THOROUGHLY USEFUL WORK, exceedingly well written. For the many Examples and 
Questions we have nothing but praise.”—Nature. 
"A CAPITAL TEXT-BOOK, arranged ON an EXCELLENT SYSTEM, calculated to give an intelligent 
grasp of the subject, and not the mere faculty of mechanical copying. . . . Mr. Wells shows 
how to make COMPLETE WORKING-DRAWINGS, discussing fully each step in the design.” —Electrical 
Review. 
_ _ ‘The first book leads EASILY and NATURALLY towards the second, where the technical pupil 
is brought into contact with large and more complex designs.” —The Schoolmaster. 
LONDON: CHARLES GRIFFIN & CO., LIMITED, EXETER STREET, STRAND. 
Nd 
