II of this Catalogue, Part III will be found to include notes from 

 several new observers. These notes and the fact that our know- 

 ledge of the smaller birds, and especially of their breeding habits, 

 is much more complete than was the case with those covered by 

 the previous parts account for the larger size of the present number. 

 Mr. William Spreadborough, who has worked as my field assistant 

 for so many years, collected in the spring of 1903 in the vicinity of 

 Lake Okanagan in southern British Columbia ; during the 

 remainder of the season he was with Mr. James M. Macoun in the 

 Peace River region in Lat. 56°. During part of April and nearly 

 the whole of May, 1904, Mr. Spreadborough collected in the 

 vicinity of Fernie and Elko, B.C., and I have been enabled to 

 include a few of his notes in the latter part of the Catalogue. At 

 the time of writing Mr. Spreadborough is en route for Hudson 

 Bay where he will spend the summer, chiefly in the study of the 

 breeding habits of the waders. Lists of birds and notes on their 

 relative abundance have been furnished me by Mr. Alfred L. 

 Garneau,-Ottawa, Ont., Mr. A. B. Klugh, Guelph, Ont., Mr. A. 

 F.Young, Penetanguishene, Ont., Mr. Norman Criddle, Aweme, 

 Man. and Mr. E. F. G. Whit« formerly residing in British Col- 

 umbia, but now at Ottawa. 



Many doubtful or immature birds have been, submitted to Mr. 

 H. C. Oberholser, Assistant Curator, Smithsonian Institution, 

 Washington, D.C.,and I have accepted his determinations in every 

 instance. Mr. Oberholser also examined all the sparrows and 

 warblers which have been found to vary as we cross the continent. 

 Much additional information regarding the birds included in the 

 first two parts has come to my hands and this will, in the near 

 future, be published in the form of an addendum to the complete 

 Catalogue. 



In bringing to a close a work, which though arduous has given 

 me not less pleasure than the compilation of my larger Catalogue 

 of Canadian Plants, I wish again to thank my many correspond- 

 snts for the information and assistance they have so freely given 



