54 THE AMERICAN MONTHLY (Mar 
blasts. The blasts multiply and are liberated into the 
body cavity of the host. Thence they-get into the saliva 
and proboscis of mosquitoes from whence they are planted 
in human tissues provided the mosquitoes can get a chance 
to “bite” (sting) a victim. 
Luckily, they require'the cool or dark hours for their 
operations, so that Doctors Sambon and Low passed weeks 
in the Roman Campagna free from malaria simply by 
keeping out of reach of mosquitoes aiter 6 o’clock p.m. 
This occurred near Ostia in one, of the worst parts of the 
Campagna. In numerous places, including our own states, 
malaria has been exterminated by secluding patients from 
~ mosquitoes and destroying their breeding places. Phy- 
sicians and Boards of Health need to weigh carefully all 
the facts adduced in this volume. A‘ war of extermina- 
tion of the mosquitoes is now at hand to be participated 
in by all hotel keepers and property owners. The author 
gives ample directions for so-doing. The breeding places 
are described and also the means of extermination. 
Among natural enemies of mosquitoes are fishes, es- 
pecially the stickleback, top-minnow and sunfish. Pre- 
datory insects such as the dragon-fly are useful, as are 
night-hawks, bats and whippoorwills. Kerosine oil is 
most used to destroy larve and the cheapest petroleum 
answers every purpose. Permanganate of potash is not 
effective. Filling and drainage are proved to be essen- 
tial adjuncts. : 
Not a more useful book has emanated from the workers 
in the Department of Agriculture than this one. Its 
mechanical features are all that could bedesired. Its 50 
engravings are first class. The facts are clearly and ac- 
curately stated. The author is one of those “good fel- 
lows” whose presence always brings cheer. No one would 
do you a good turn so quickly, so unostentatiously and so 
unselfishly. The bogk is characteristic of the man, Its 
knowledge will enable one to diminish suffering, improve 
Pe 
