PREFACE. 
In the following Check List I have endeavored to include all the 
birds that have been positively known to occur in the Province of 
Ontario. 
In cases where I have no personal knowledge of the record, I have 
given the authority for it. 
The nomenclature adopted is that of the Check List of the 
American Ornithologists Union: 
C. W. NASH. 
Toronto, Ontario, April 12th, 1900. 
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