Bausch & Lomb New Opaque Projector 



EVERY teacher has longed, at times when she has had 

 something to show to a class, for a means of present- 

 ing it so that all the pupils might see it at the same 

 time. This saves time and effort of duplication. 



•I With this apparatus the feat is easily accomplished, for 

 opaque objects (post cards, photographs, illustrations from 

 books, living material as well as inanimate objects, etc.) can 

 be successfully projected upon a screen in full view of the en- 

 tire class. 



€J The Projector is exceedingly simple and the apparatus is so 



well constructed that its use involves none of the difficulties 



found in the cheaper forms of projectors. 



^ Descriptive circular on request. 



Our Name on a Photographic Lens, Micro- 

 scope, Field Glass, Laboratory Apparatus, 

 Engineering or any other Scientific In- 

 strument is our Guarantee. 



Bausch & Ipmb Optical 0. 



fttW YORK WASHINGTON CHICAGO SAN FRANCISCO 



london fiocH ESTER.. NY. ™ankfort 



Nature's Gifts. 



From the Cocoa Bean and the 

 Wheat, two of the greatest "food 

 value "plants Mother Earth ever 

 grew, is manufactured the most 

 perfect Luncheon Wafer in the 

 shape of 



Healthful 



Delicious 



Satisfying 



Nourishing 



Muscle-building 



Sold everywhere 







:•¥ 



Refracting and Reflecting 



Astronomical Telescopes 



Standard and Portable 



Visual and Photographic 



OBJECTIVES 



Computed by our associate 



DR. F. R. HOULTON 



(Chicago University) 



OBSERVATORIES 



Specula, Planes, Eyepieces, etc. 



Illustration shows 6-in. with pneumatic clock. 



Photographs and Circulars on request 



LOHHANN BROS. 



GREENVILLE, OHIO : : : : U. S. A. 



