128 PatmER, In Memoriam: Wells W. Cooke. Lak 
tion down to 1909. In the 12 years between the appearance of the 
original bulletin and the third supplement on the birds of Colorado, 
the number of species credited to the State was increased from 363 
to 397 and the number of those breeding from 236 to 248. Early 
in 1912 appeared W. L. Sclater’s ‘History of the Birds of Colo- 
rado,’ in which the total number of species was given as 392 (in- 
cluding 13 not given by Cooke) and the number of those breeding 
reduced to 225. Cooke promptly published a paper on ‘The 
Present Status of the Colorado Check List of Birds,’ 1 in which he 
analyzed the differences in the two lists, accepted most of Sclater’s 
eliminations from the breeding list but concluded that the total 
number of species should be increased to 403, to which might be 
added 7 more, the status of which was still in doubt. Important 
in this connection are his papers on ‘The Winter Ranges of the 
Warblers’ ?; ‘Some Winter Birds of Oklahoma’? based on his own 
observations in 1883-84, and ‘ Labrador Bird Notes’ # based on the 
field notes of Clarence Birdseye. - He has also left in manuscript a 
detailed list of the ‘Birds of New Mexico.’ The long series of 
migration articles in “Bird-Lore’ and in his bulletins on various 
groups of birds published by the Biological Survey contain a 
wealth of data regarding the distribution of the species mentioned. 
Members of the committee in charge of the preparation of the 
Third Edition of the ‘Check-List of Birds’ published by the 
American Ornithologists’ Union in 1910, will reeall that he devoted 
an Immense amount of time and energy to the preparation of data 
which were incorporated in the revised statements of the distribu- 
tion of the species. 
In bibliography his first important work was in connection with 
the ‘Birds of Colorado.’ The original bulletin contained 182 
titles and the number was increased in 1900 to 225. In the Third 
Supplement he stated that the additional titles for 1900-1909 
numbered 118 and the ‘less important titles’ omitted in previous 
lists 91, thus making a total of 434, although he gave only 61 of the 
additions in full. Sclater’s bibliography brought down to Decem- 
1 Condor, XIV, pp. 147-153, July 1912. 
2 Auk, 1905, pp. 296-299. 
3 [bid., 1914, pp. 473-493. 
4 [bid., 1916, pp. 162-167. 
