Bird-Lores Wanted 



^XT ANTED— A copy of Bird-Lore 



** for January-February, 1905. Ad- 

 dress, stating terms, A. LeChasseur, 

 Trois-Pistoles, Que, Canada. 



Vy'ANTED— A copy of Bird-Lore 

 * * for June, 1900, and October, 

 1900. Address, stating terms, Edward 

 E. Armstrong, 5219 Madison Avenue, 

 Chicago, 111. 



VKfANTED— One volume each, of 

 V** volumes I, II, or III of BlRD- 

 LORE. Address stating price, J. Wood- 

 cock, Minnedosa, Manitoba. 



Note. — Certain numbers of Bird-Lore 

 now being out of print, we will publish free 

 of charge "Want" notices similar to those 

 above given. 



The Wilson Bulletin 



Is a quarterly journal devoted to 

 the study of the birds as we find 

 them in the fields and woods. 



It is particularly concerned about the study 

 of the whole life-history of each species, 

 and about the effects of advancing civiliza- 

 tion upon the lives of all birds. It urges 

 the great importance of making a census 

 of our bird population for the purpose 

 of determining accurately what change 

 there may be in numbers due to changing 

 conditions. It is the official organ of the 

 Wilson Ornithological Club, which num- 

 bers among its members some of the 

 most prominent American ornithologists. 

 Carefully selected illustrations appear in 

 each number. 



15 cents a number; 50 cents a year 



Address 



LYNDS JONES, Editor, Oberlin, Ohio. 



Baiisch&Lomb-Zeiss 



Convertible Protar 



Series VII A 



is the lens par excellence for 

 the naturalist photographer 



It is not only a doublet 

 of moderate focal length 

 but also one or two single 

 long-focus lenses accord- 

 ing as the doublet is com- 

 posed of lenses of similar 

 or dissimilar foci. 



Send for Descriptive Circular 



u 



PRISM" 



is a Little Magazine 

 we publish monthly. Not 

 a mere advertisement, but 

 a beautifully made and 

 printed little publication 

 about that world of won- 

 der and beauty seen by 

 the lens. Send us your 

 name and we will enter 

 your subscription FREE. 



W 



Bausch & Lomb Optical Co. 



ROCHESTER, N. Y. 



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