WILLIAM SMITH I HIS MAPS AND MEMOIRS 
115 
well instructed in practical geometry and the use of naathematical 
instruments, with the principles of machines intimately connected 
Fac-simile of plate in Smith's '• Treatise on Irrigation/" reduced, 
with their profession, instead of spending their time in learning latin, 
or pursuing other studies, for the attainment of which, not one out of a 
hundred has any occasion. This misappHcation of time in early youth. 
