REVIEWS. 613 
from ignorance of scientific laws,* iy resulting from te at 
and vice, the offspring of ignorance, —the amount that is thus w we 
venture to assert would, if saved, pay off our national debt in one year, 
and change our world as it were into a new planet! A century hence 
when the country is crowded tenfold 
its present amount, our pem pae will 
Fig. 129. 
the hilrodusiló to his report that 
“we have in inda country altogether 
f f th 
d- 
m attention, and are considered Apis as 
as very serious evils in Europe, would not be deemed worthy of notice in 
. ravages, and each State loses annually from fifty to sixty "n dollars 
from this cause alone, though but four states bave as yet m 
attempt to prevent this serious loss." e may reasonably a the 
annual loss in our country alone from noxious animals and the lower 
Amey such as rust, smut and mil- 
ol as not far from one thousand 
ie Y dollars! Of thi un 
at least one tenth, or one hundred 
million of dollars annually, could 
probably be saved by human exer? 
i St ainai tell us that 
a 
doubled; the average man lives forty 
ears, where in Spencers time he 
lived but twenty. The world since Sh time has become richer and better 
Eudryas grata, 
Science will do for agrieulture and the arts. However RI our 
3 +h 
*'" In Great Mm mpra more than h 
least five times s many sicken bro out of pure ignorance of the laws of health, whieh 
are never Mn Od t6 pies em at school.” — Dr. Playfair's Address at the British Social Sci 
Congress, 
