LOSSES BY INSECTS 3 



ciduous fruit interests of the United States as over 

 $66,000,000. 



The annual loss to the people of the United 

 States from malarial diseases carried by mosquitoes 

 is not less than $100,000,000.^ The loss to agri- 

 culture and other industries as a result of malaria 

 is enormous.^ 



The loss that has been caused by yellow fever, 

 carried only by mosquitoes, cannot now be esti- 

 mated but was certainly very great. 



Typhoid fever, due in large measure, at least, to 

 its dissemination by the house-fly, causes a very 

 great annual monetary loss. 



The Mexican cotton-boll weevil costs Texas at 

 least $25,000,000 annually, and it is estimated that 

 when it spreads over the whole cotton area it will 

 cause a yearly loss of $250,000,000. 



The Hessian wheat-fly in 1900 cost the wheat 

 growers $100,000,000. 



The chinch bug during the period from 1850 to 

 1909 caused a loss estimated as probably in excess 

 of $350,000,000.^ 



The codling moth causes the fruit growers of the 

 U. S. a loss of over $12,000,000 and of New York, 

 alone, more than $3,000,000 annually. 



COST OF FIGHTING INSECTS 



To the destruction occasioned by insects must be 

 added the cost of fighting them. 



It is estimated that it costs $4,000,000 to spray 

 the apple trees in the United States for the codling 

 moth. 



It is said that it costs $10,000,000 annually to 

 spray for the San Jose scale. 



4 Howard— U. S. Bu. Ent., Bull. 78. 



^ Herrick — Popular Science Monthly, April, 1903. 



c Webster— U. S. Bu. Ent., Circ. 113. 



