Ail-Round Adaptability 



it the essentia] requirement in the projection instrument intended for the 

 use of the teacher, lecturer or general entertainer. 



BausclT|omb 



optical] 



The Perfect Stereopticon 



is the popular choice in colleges and schools generally and is widely used 

 by lectureis and other entertainers, as well as in the home. This perfect 

 stereopticon projects sharply-defined brilliant screen images from ordinary 

 lantern slides. A scientific instrument — optically and mechanically ac- 

 curate — durable in construction and extremely simple in operation. 



The Balopticon may also be arranged for the projection of photos, 

 postcards, sketches, etc. 



Model C Balopticon $25 and up 



Opaque Attachment $30 and up 



Writ* Today for Descriptive Circular 



Bausch & Iprnb Optical 0. 



650 ST. PAUL STREET ROCHESTER. N.V 

 New York Washington Chicago San Francisco 





(ANDIES QF RARE QUAlllY 



My FAVORITES 



NOITED CHOCOLATES ONLV 



Ohjr 



of tk. 

 Highest Grades 

 Scientifically 

 Blended are Used 



Oh the 



aracier of 

 Depends 

 its Fitness 

 for Gift Makintf 



Sold by our Sales Agents Everywhere 

 in Three Sizes $LOO-50*-25« 



Refracting and Reflecting 



Astronomical Telescopes 



Standard and Portable 



Visual and Photographic 



OBJECTIVES 



Computed by our associate 



DR. F. R. riOULTON 



(Chicago University) 



Illustration shows 5-iri. with pneumatic clock 



OBSERVATORIES 



Specula, Planes, Eyepieces, etc 

 [Photographs and Circulars on request 



L0HHANN BROS. 



RENVILLE OHIO s: :: U. S. A° 





