PREFACE TO THE SECOND EDITION. 



A T the Eleventh Congress of the American Ornithologists' Union, 

 ^*" held in Cambridge, Mass., November 20-23, 1894, it was voted 

 to publish, as early as practicable, a new edition of the Union's Check- 

 List of North American Birds, to include the numerous additions and 

 nomenclatural changes made in the several Supplements 1 to the 

 Check-List since the publication of the original edition, together with 

 a revision of the 'habitats' of the species and subspecies, but omitting 

 the Code of Nomenclature. 2 The original Committee on Classifica- 

 tion and Nomenclature of North American Birds was reappointed 3 

 to take charge of the work. The Committee held sessions in Washing- 

 ton, D. C., January 15-19, 1894, and February 12, 13, 1895, to outline 

 the work and to rule on the questions involved in the publication of 

 the revised List. The revision of the matter relating to the geographic 



1 Supplement | to the | Code of Nomenclature and Check-List | of | North American 

 Birds | adopted by the American Ornithologists' Union | Prepared by | a Committee of 

 the Union | | New York | American Ornithologists' Union | 1889. 8vo, pp. 23. 



Second Supplement to the American Ornithologists' Union Check-List of North 

 American Birds. The Auk, VII, Jan. 1890, pp. 60-66. Also separate. 



Third Supplement to the American Ornithologists' Union Check-List of North Ameri- 

 can Birds. The Auk, VIII, Jan. 1891, pp. 83-90. Also separate. 



Fourth Supplement to the American Ornithologists' Union Check-List of North 

 American Birds. The Auk, IX, Jan. 1892, pp. 105-108. Also separate. 



Fifth Supplement to the American Ornithologists' Union Check-List of North American 

 Birds. The Auk,X, Jan. 1893, pp. 59-63. Also separate. 



Sixth Supplement to the American Ornithologists' Union Check-List of North Ameri- 

 can Birds. The Auk, XI, Jan. 1894, pp. 46-51. Also separate. 



Seventh Supplement to the American Ornithologists' Union Check-List of North 

 American Birds. The Auk, XII, April, 1894, pp. 163-169. Also separate. 



Check-List | of | North American Birds | according to the Canons of Nomenclature | of 

 the | American Ornithologists' Union | | Abridged Edition | Revised | | Published 

 by the American Ornithologists' Union | 1889. 8vo, pp. 71. Includes the additions 

 to the original Check- List made in the first Supplement. 



2 Republished separately in 1892 as a pamphlet of 72 pages with the following title: 

 The | Code of Nomenclature | adopted by the | American Ornithologists' Union | | 

 Zoological Nomenclature is a means, not an end, of Zoological Science | | New York | 

 American Ornithologists' Union | 1892. [8vo, pp. i-v + 1-72. Same as the original, 

 with a prefatory ' Note ' and Index.] 



3 With the exception of Mr. H. W. Henshaw, who was unable to serve, and Dr. C. Hart 

 Merriam was appointed in his stead. 



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