BACK NUMBERS OF THE OSPREY. 



A Few Complete Sets of Volume Two at $1.50 Each. 



We Clin no longer supply Volume One at any price. 



We have a few odd numbers of Volume One at an average price of fifty cents each. 



Prices Q6oterl in this Staten)er)t are Scibjeet to AdVaree Without |Soliee. 



Subscription for Volume Two will be accepted at $1.50, until further notice. 

 Order promptly, as we cannot supply many numbers. 



Address THE OSPREY COMPANY, 321-323 4>< Street N. W., WashinjltOD, D. C. 



Articles intended for publication, Books for review, and Exchanges, should be addressed to 

 The Editor of the Osprey, 321 and 323 42 Street, N. W., Washington, D. C. 



Subscriptions and Advertisements should be addressed to The Publishers of the 

 OSPREY, 321-323 U Street N. W., Washington, D. C. 



Terms: In the United States, Canada and Mfexico, $ico a year in advance; 

 13 cents a number. 



THE OSPREY COMPANY, 321-323 4^ Street N. W., Washington, D. G. 



Puhlications of the American Ornithologists' Union. 



TUB AUK, 



A Q6arterly Jo6PDal of Ornitbology. 



I. A. ALLEN, Editor. FRANK M. CHAPMAN, ASSOC. Editor. 



As the official organ of the Union, "The Ank" is 

 the leading ornithological publication of this country. 

 Each number contains about 100 pages of text, a 

 handsomely colored plate, and other illustrations. 

 The principal articles are by recognized authorities, 

 and are of both a popular and scientific nature. The 

 department of "General Notes" gives brief record 

 of new and interesting facts concerning birds con- 

 tributed by observers throughout the United States 

 and Canada. Recent ornithological literature is re- 

 viewed at length and news items are commented on 

 by the editors. "The Auk" is thus indispensable to 

 those who would be informed ol the advance mt^de in 

 the study of birds, either in the museum or in the 

 field. Price of current volume, $3.00. Single num- 

 bers, 75 cts. 



Check-List of North American Birds. 



The text has been most carefully revised, recent 

 changes in nomenclature and specief and sub- 

 species described since 189B are included, while the 

 ranges of birds have been entirely re-written and 

 more fully defined. 8vo. Cloth. Price, $2.00. 



L. S. FOSTER, 



Agfnt for the Union of the Sale of its PnUicationg. 

 03 Pir)e Street, l^e\^ Yorls Gitv. 



BIRD=LORE FOR 1900 



Will contain numerous article by recognized 

 leaders in the world of science and letters, and 

 of a variety which cannot fail to create wide 

 interest. 



For the general reader there will be papers by 

 John Burroug-hs, Bradford Torrey, Robert Ridg-- 

 way, William Brewster, C. Hart Merriam, T. S. 

 Roberts, E. A. Mearns, and others, and Captain 

 Reynaud, in charge of the Homing Pigeon Ser- 

 vice of the French Army, will present a new- 

 theory of bird migration, based on his experi- 

 ments with homing pigeons. 



Attention will be paid to the bird-life of the 

 countries made prominent by recent events, 

 Tappan Adney writing of the birds of the Klon- 

 dike. H. W. Henshaw, of the birds of Hawaii, 

 L. M. McCormick, of Philippine birds, and F. M. 

 Chapman of Cuban birds, while A. J. Campbell, 

 the authority on Australian birds, will describe 

 the wonderful habits of the Bower Birds of Aus- 

 tralia, accompanying his paper by actual photo- 

 graphs of their bowers from nature. 



Students will be glad to avail themselves of 

 the assistance offered by Bird-L,ore\s 'Advisory 

 Council,' a new idea in self-educational orni- 

 thology, which places students in direct commu- 

 nication with an authorit)^ on the bird-life of 

 their region who has consented to aid them. 



The illustrations will be of the same high 

 character as those for which Bikd-L,ORE has 

 alreadj' become distinguished. 



Annuul Subscription, $i.oo: 5ingle Number, 20 cts. 



THE MACMILLAN COMPANY, 



Englewood New Jersey, or 

 66 Fifth Avenue, New York. 



