vi 
tions and observations on the nesting habits of birds within the 
Arctic cannot be overestimated. 
In addition to the works specially cited above I have used 
manuscript lists and notes on nesting habits of birds from Mr. 
George White, Ottawa; Rev. C. J. Young, Lansdowne, Leeds 
Co., Ont.; Mr. J. Dippie, Mr. J. C. Fleming and Mr. Walter Raine, 
Toronto, Ont.; Mr. William Saunders, London, Ont.; Mr. 
Robert Elliott, Plover Mills, Middlesex Co., Ont.; Mr. P. A. 
Tavernier, Bracebridge, Ont.; Mr. A. P. Low, Mr. J. M. Macoun, 
Dr. Robert Bell, Mr. J. B. Tyrrell and Mr. R. G. McConnell, all 
of the Geological Survey Staff; and lastly various lists and reports 
from Mr. Wm. Spreadborough, of Bracebridge,-Ont. 
The whole series of the Transactions of the Natural History 
Society of Nova Scotia ; the Bulletin of the Natural Eistory Soctety of 
New Brunswick ; the Canadian Naturalist and Canadian Record of 
Science, Montreal ; Ottawa Naturalist ; Journal of the Canadian 
Institute, Toronto, and the Awk, published in New York, have 
been drawn upon for notices of rare species and local lists by 
various contributors. 
It is proposed to complete the second part of the Catalogue 
next winter, and the writer asks ornithologists who may receive 
the present publication to communicate to him any additional 
facts they may have observed respecting the birds included in it. 
Such additions will be attached as a supplement to the second 
part. 
JOHN MACOUN. 
Orrawa, March 26th, 1900 
