Bausch & Lomb 



announce a New Portable Balopticon 

 Model C 



Designed for Educational, Scientific 

 and Popular Projection 



Combining Simplicity of Operation, Com- 

 pactness and Light Weight, together 

 with Low Cost. 



Complete with electric hand feed 

 lamp and 1 -4 plate lens for $35.00. 



This lantern, owing to all its parts 

 being standardized, permits the ad- 

 dition at any time of attachments 

 for opaque and microscopical pro- 

 jection. 



Send for new Catalog D-g giv- 

 ing complete description and prices 

 with various accessories. 



PRISM is our little lens exposi- 

 tor. Send for Copy D free upon 

 request. 



/ *gg3 jy Our Name on a Photographic Lens, 



(((tftffiS Microscope, Field Glass, Laboratory Ap- 

 vXU^/ P amtm > Engineering or any other Scien- 

 X*"*> / tific Instrument is our Guarantee. 



Bausch & lomb Optical (o. 



NtW VOftK WASHIU'd'rON CHICAGO SAN FRANCISCO 



LONDON ROCHESTER.. NY. ™ANKrORT 



Cocoa soldi 

 by dealers 



everywhere in 25c, 15c 



and 10c cans. 



The Reflecting Lantern 



or Post-card Projector, in its various forms, is 

 doubtless the most universally useful projection 

 instrument ever invented. With it a collection of 

 post-cards or engravings becomes a source of 

 endless amusement and instruction. With it also 

 natural specimens such as 



Flowers, Leaves, Minerals* 



Butterflies, etc., 



are shown In All the Colors of Nature 



We manufacture our Projectors to show 



Opaque Pictures and Objects 



Lantern and Microscopic Slides 



We offer thirty different styles covering every pos- 

 sible requirement and ranging in price from 



$4.50 to $200.00 



We also make Magic Lanterns, Cinematographs, and 

 have 40,000 Lantern Slides for sale or rent. Lists free. 



Manuf^rturers and Patentees 



WILLIAMS, BROWN & EARLE, 

 918 Chestnut St., Dept. N , Philadelphia, Pa. 



