vi PREFACE 



ing a thorough training in zoology with rare gifts as an in- 

 vestigator, executive talent of a high order, and sympa- 

 thetic insight into the achievements of other workers, not 

 only in entomology, but in biology generally, he could not 

 fail to secure the affection, as well as the confidence and 

 admiration of all the men, and particularly the young men, 

 whom he had chosen as aids in building up his department." * 



In 1916 he was offered and accepted the position of Con- 

 sulting Zoologist. His duties were thus enlarged, and his 

 sphere of useful activity appreciably increased. For the 

 new work he was especially fitted, as Doctor Wm. T. 

 Hornaday says: "His broad mind reached out, and grasped 

 the whole invertebrate fauna of the vast region embraced 

 in the Canadian Dominion." f His sphere of influence 

 extended beyond the Dominion, again quoting Doctor 

 Wheeler: "Realizing that very many of the native and in- 

 troduced animals, and the economic problems to which 

 they give rise, are identical in Canada and the northern 

 United States, he took an actively constructive part in all 

 deliberations, wherever men were assembled in either of the 

 sister commonwealths, to discuss practical matters relat- 

 ing to our insects, birds, and mammals," and by accepting 

 the position of Canadian representative on the International 

 Commission for the Protection of Nature his work became 

 world-wide. 



Inspired by Doctor Hornaday, and encouraged by Mr. 

 James White, he commenced to write this book, which oc- 

 cupied much of his spare time during the last four years of 

 his life. As he wrote the book at home in the evenings, I 

 became familiar with it, chapter by chapter, for he liked to 

 read aloud what he had written; also, before writing, he 

 was eager to discuss present needs and future developments. 

 Evening after evening in his library, easy chairs on either 



* Journal of Economic Entomology, vol. XIII, no. 2. 



t The statement of the Permanent Wild Life Protection Fund, vol. III. 



