(WHITWORTH SCHOLAR), M. INST. M.E.
HEAD MASTER OF THE PEOPLE'S PALACE TECHNICAL SCHOOLS, LONDON
AUTHOR OF 'A TEXT-BOOK ON PRACTICAL SOLID OR DESCRIPTIVE GEOMETRY'
'AN ELEMENTARY TEXT-BOOK OF APPLIED MECHANICS' ETC.
[Illustration]
_FOURTH EDITION_
LONDON
LONGMANS, GREEN, AND CO.
AND NEW YORK: 15 EAST 16th STREET
1890
PRINTED BY
SPOTTISWOODE AND CO., NEW-STREET SQUARE
LONDON