X 



THE GUIDE TO NATURE 



..% 



Bausch Ipmb BALOPTICON 



Entertains 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 w^ith lan- 

 tern slides or for the direct projection of opaque objects such as photos, post 

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



Piclures sharp and 

 brilliant to the cor. 

 nets— not dull 

 and haiy 



stant interchange. 



Type l>k« 



eidi 



The newr 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 (o. 



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

 New York Washington Chicago San Francisro 



Leading American Afakrrs of High Cralc Oriical Products 



The eighteenth volume of 



Bird-Lore 



begins February 1, 1916. 



Volume I contained 206 pages and 

 no colored plates ; Volume XVll 

 contained 560 pages and eleven 

 colored plates. 



The magazine has grown, but the 

 price remains the same. 



Annual subscription $1.00 



D. APPLETON & CO. 



29 West 32d St. l\cw York City 



LANTERN SLIDES 



and 



PHOTOGRAPHS 



of 



NATURE SUBJECTS 



ABOUT 3000 NEGATIVES 



of 



Birds, Nests, Mammals, Reptiles, Insects, 



Flowers, Etc. 

 Lists and Prices of Slides and Prints, 

 Plain or in Colors, Sent upon Application. 



L. W. BROWNELL 



210 Market St. 



Paterson, N. J. 



