THE OOLOGIST 



"WANTED — Common sets of all kinds 

 ornithological magazines, bird skins. 

 Will pay reasonable prices. What have 

 you? Will be in the Exchange market 

 in spring. JOHNSON A. NEFF, P. O. 

 Box 9, Marionville, Mo. 



I HAVE over 100 kinds of Fresh 

 Water mussels to sell or exchange for 

 same or skins or eggs. DR. W. S. 

 STRODE, Lewiston, 111. 



WANTED — To correspond with any 

 enthusiastic, but careful, students of 

 natural history that will exchange 

 ideas, experiences, etc. Friendly cor- 

 respondence solicited, especially with 

 Ornithologists; mammalogists; botan- 

 ists; and lepidopterists. THEODORE 

 R. GREER, Sheridan, 111. care F. R. A. 



WANTED — For Cash or Exchange: 

 Oologists for Dec. 1902; June and July, 

 1912; April and May, 1918; Jan. and 

 Feb. 1919. Also who can offer any of 

 the following complete volumes: Oolo- 

 gist, 1903 to 1912 inclusive? J. WAR- 

 REN JACOBS, Waynesburg, Pa. 



WANTED— Sets or singles of Hawks, 

 crows, bluejays, sandpipers, waxwings, 

 grackles, blackbirds, warblers in quan- 

 tities for cash. Also Duck Hawks. 

 KARL A. PEMBER, Woodstock, Vt. 



THE 



"Blue- Bird" 



Is now published monthly, the 

 year 'round, with new and inter- 

 esting departments, features and 

 contests, and 



At No Additional Cost to 

 Subscribers 



Official Organ of the Cleveland Bird 



Lovers' Association. 

 SEND STAMP FOR SAMPLE COPY 



Annual Subscription, $1.50 



AGENTS WANTED EVERYWHERE 



"THE BLUE-BIRD," 



1010 Euclid Ave. 



CLEVELAND, OHIO 



NEW SUBSCRIBERS 



This is an appeal to each one of our subscribers 

 to pick out some likely young student of birds and 

 send him "The Oologisf for 1920. Surely our 

 older subscribers have interest enough in spread- 

 ing the influence of this Journal to do this. 



THE OOLOGIST. 



