Copyright, 1901, 
BY 
LONGMANS, GREEN, AND CO. 
First Edition, March, 1902; 
Reprinted, January, 1903. 
Reprinted, August, 1905. 
Transfer 
( c < 
Engineers <S ( ohoof l^iby, 
June 29 ,. 9 . 
ROBERT DRUMMOND, PRINTER, NEW YORK. 
