xxvi INTRODUCTORY 



John B. Burnham, has shown me many courtesies, likewise 

 E. A. Quarles, one of its vice-presidents, and all its officers. 



In connection with the scientific expeditions to Manitoba, 

 I am also deeply grateful to Hon. George Lawrence, Minister 

 of Agriculture of the Province of Manitoba, and the others 

 of the Ministry who granted the permits : to Charles Barber, 

 the chief game guardian; to Samuel Spence, Dr. Gordon 

 Bell, Dr. R. M. Simpson, Dr. F. B. Cadham, and E. W. 

 Darbey, of Winnipeg, for valued help and esteemed cour- 

 tesies; and to Dr. T. S. Palmer, of the United States Bureau 

 of Biological Survey; Governor Simeon E. Baldwin of Con- 

 necticut, and Dr. L. A. Clinton, then of The Storrs Agricul- 

 tural Experiment Station of Connecticut, for further im- 

 portant assistance. 



There is a further debt of gratitude to record. Much of 

 the material of this Manual is in a sense pioneer work. Lest 

 it should be said by some, with any show of reason, that it 

 represented simply the ideas or theories of one man, I have 

 submitted the material to several experts, all of whom have 

 approved the book, as far as they have read the manuscript. 

 What few changes or additions they have suggested, all in 

 minor details, have been incorporated in every case. Fred- 

 eric C. Walcott, a Director of the American Game Protect- 

 ive and Propagation Association, and one of the foremost 

 experts in America in practical propagation of waterfowl 

 and game-birds, has carefully read the whole book, and has 

 gone over most of it with me in person, at the sacrifice of 

 valuable time. He cordially endorses this material, as 

 well as my work in general, and has sent such endorsement 

 in writing to T. Gilbert Pearson. U. S. Senator George P. 

 McLean has also written endorsement and congratulation 

 on the success and value of the work and investigations. 

 The material of Part I has also been read and approved 



