X 



THE GUIDE TO NATURE 



ALOPTICON 



Enterfains through the sense of sight as the phonograph does through the ear. 

 The Balopticon is not a toy but a very practical instrument, designed to meet 

 every requirement of a projection lantern. Various models for use with lan- 

 t ^rn slides or for the direct projection of opaque objects such as photos, post 

 cards, specimens, etc. Also combination models for both methods, with in- 

 stant interchange. The new gas-filled Mazda lamp gives an illuminating 

 equipment superior to the old style arc lamp, but using less cur- 

 rent. The entire instrument is simple enough for a child to oper- 

 ate. Prices range from $20 up. 



Write for booklets about the Balopticon — also price lists. 





Bausch ^ Ipmb QP^ical (3. 



000 St. Paul Street, Rochester, N. Y. 



New York Washington Chicago San Franciyco 



l-cadiniJ Americ'ui Maher-i of High Oracle OpVral Produds 



The eighteenth volume of 



Bird-Lore 



begins February 1, 1916. 



Volume I contained 206 pages and 

 no colored plates ; Volume XVII 

 contained 560 pages and eleven 

 colored plates. 



The magazine has grown, but the 

 price remains the same. 



Annual subscription $1.00 



D. APPIETON & CO. 



29 West 32<I St. New York City 



LANTERN SLIDES 



and 



PHOTOGRAPHS 



of 



NATURE SUBJECTS 



ABOUT 3000 NEGATIVES 



of 



Birds, Nests, Mammals, Reptiles, Insects, 



Flowers, Etc. 

 T-ists and Prices of Slides and Prints, 

 Plain or in Colors, Sent upon Application. 



L. W. BROWNELL 



210 Market St. Paterson, N. J. 



