INTRODUCTION 



" THERE is a certain school of biologists who regard any 

 work which can at all be applied as something very 

 inferior to the enumeration of the bones of some animal's 

 skull, or a technical description of a new species. Such 

 work has its place, but I certainly think that equal praise 

 and reward are due to the man who can seize hold of the 

 results of his or others' researches and weave them into 

 the daily life of a nation or a community for their benefit." 

 These words, uttered by an eminent scientist during an 

 address at Bristol University, express, in some measure, 

 the indifference, amounting almost to opposition, which has 

 been meted out to the applied biologist by his confreres. 

 The man who has attempted to use his knowledge of insect 

 habit and habitat for the benefit of his fellow-men has been 

 looked upon as a dabbler in science rather than as a serious 

 worker. Underestimated by scientists, misunderstood by 

 the very sections of the community who should have 

 received him with open arms, the applied biologist has 

 " ploughed his lonely furrow " till at length his work has 

 come to be recognised. 



A disintegration of opposition is taking place, or has 

 taken place, in every civilised country. In America, the 

 applied biologist has long been a power in the land ; 

 generously assisted by his government, he has not wasted 

 his opportunities of showing that there is "something in 

 it." In this country, at least, it is to such men as Manson, 

 Ross, and Sambon, workers in the medical field of ento- 



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