FOREWORD xiii 



greater distance than the domestic species. They are not 

 usually troublesome indoors. 



It has been proved that malaria is transmitted only by 

 certain species of Anopheles, one of which is the domestic 

 mosquito. Eliminate this one species of mosquito and the 

 disease will disappear as a direct consequence. So if you 

 hear that pretty little song in the house, don't swear, thank 

 the Lord that effects always follow causes. You need never 

 be without a bite in the house if you have a nice cesspool 

 handy for Sis Mosquito, for each one will have a first-class 

 feed with you every second or third day. 



They are needless and dangerous pests or pets. Their 

 propagation can be prevented by draining or filling wet 

 areas, by emptying or screening water receptacles, and by 

 spraying with oil where better measures are not available. 

 Oil should be sprinkled in any cesspools, sewers, and catch 

 basins, rain barrels, water troughs, roof gutters, marshes, 

 swamps, and puddles that cannot be done away with. All 

 ponds and large bodies of water should have clean sharp 

 edges, because in shallow, grassy edges larvae of the malarial 

 species are commonly found. Large ponds with clean edges, 

 inhabited by fish or predatory insects, are safe ; smaller ponds, 

 if wind swept, and all ponds in the " ripple area " are safe. All 

 rain pools, stagnant gutters, overgrown edges of large ponds, 

 and all receptacles holding water not constantly renewed, are 

 dangerous. You raise most of your own mosquitoes. 



Now a word specially concerning this revised edition. 



The farm papers are supported mainly by men with large 

 acreage, it is the rise in value of these acres more than the 

 rise in farm products that has pulled the land-owning farmers 

 out of the hole that they were in up to about the year 1900. 

 Farmers' knowledge, liking, and equipment was for big 



