BACK NUMBERS OF THE OSPREY. 



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



We can no longer supply Volume One at any price. 



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



Prices Ouoted in this Slaleroept are S6hjeel to Adx^ance Without ISotiee. 



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., Wcisliiii^lon, D. C. 



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

 The Editor of the Osprey, 321 and 328 4* Street, N. W., AVashington, D. C. 



Subscriptions and Advertisements shonld be addressed to The Publishers of the 

 OSPEEY. 321-323 4* Street N. ^^'., Washington, D. C. 



Terms: In the United States, Canada and Mexico, ii.oo a year in advance; 

 13 cents a number. 



THE OSPREY COMPANY, 321-323 Ay, Street N. W., Wasbirgton, D. 6. 



Publications of the American Ornithologists' Union. 



Tim AUK, 



A Qdarterly Joarnal of Orr)ilhology. 



I. A. ALLEN, Editor. 



FKAK M. CHAPMAK, ASJPC, Editor, 



As the official orp;an of tlie Union, "The Auk" is 

 the leading orniihological publitation of this covuitry. 

 Each number contains about lUO pa^es of text, a 

 handsouielv colored plate, and other illustrations. 

 The prmcipal articles are by recognized authorities, 

 and are of both a popular and scientitic nature. The 

 deparuiient of "General Notes" givfs brief record 

 of new and interestino; iacis concerning biros con- 

 tributed by observers throughout the United States 

 and Canada. Recent ornithological literatuie 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 of the advance m: de in 

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

 field. Price of current volume, 5*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 specie^ and sub- 

 species described since 189H are included, while the 

 rano-es of birds have been entirelv re-writttn and 

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



L. S. FOSTER, 



Agent for the Union of the Sale of its Pvblicaticns. 

 S3 Pir)e Street, l^evC Yorl^ Gity. 



B1RD=L0RE 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 Burroughs, Bradford Torrey, Robert Ridg"- 

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

 Robert.s. E. A. Mearns, and others, and Captain 

 Rej'naud, in charg-e 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 wiki be paid to the bird-life of the 

 cotnitries made prominent by recent events, 

 Tappan Adnej^ writing of the birds of the Klon- 

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

 Iv. 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 bj' actual photo- 

 graphs of their bowers from nature. 



Students will be glad to avail themselves of 

 the assistance offered by Bird-Lore's 'Advisory- 

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

 thology, which places students in direct commu- 

 nication with an authority on the bird-life of 

 their reg^ion who has consented to aid them. 



The illustrations will be of the same high 

 character as those for which Bird-LorE has- 

 already become distinguished. 



Annual Subscription, $1.00; 5ingle Number, 20 cts. 



THE MACMILLAN COMPANY, 



I£/i_<^'/rzcooif Aczc Jcisey, 07- 

 66 Fifth Avenue, New York^ 



