PROFESSOR OF CIVIL ENGINEERING IN THE UNIVERSITY OF DUBLIN ;
HON. MEMBER OF THE INSTITUTE OF MECHANICAL ENGINEERS;
ASSOCIATE INSTITUTION OF CIVIL ENGINEERS.

Third Edition, Rebised and Enlarged.

LONDON:

LONGMANS, GREEN, AND CO.

1

INTRODUCTION.

CORRIGENDA.

Page 6, line 2, for 44° read 4°.

18, under woodcut, for Fig. 3 read Fig. 5.
40,
for Fig. 14 read Fig. 13.

ing, conveying, and distributing the necessary supply of water, for mill-power, or for the summit-levels of canals; or for the supply of cities; and, generally, of all such works as depend for their suitable construction and proportions upon the result of calculations requiring a knowledge of the pressure and motion of fluids.

2. Fluids are defined to be bodies whose particles, by reason of their extreme mobility, yield to every the least force; they have, however, a certain degree of adherence