Model C 

 BalopticoQ . 



Help the Pup3 to Remember the Lesson 



You can do thlt if you eive a visual demonstration of the subject 

 about which you speak. Pictures of travel, history, geography, and the 

 Lke can be e&tertauiiugbr shown in connection with the lecture if you 

 have a 



lausch li^b 



Baloplicon 



The Balopticon is a perfect pnqectton instniment. It can be used 

 foe ordinary lantern ^ides or can be arranged to project prints, photos, 

 post-cards, etc. When your pupil actually sees what you are tallung 

 about it will make a much more lasting impression on his memory. 



Our Model C Balopticon (illustrated) is now 



priced at $25.00, and the opaque attachment is 



priced at $30.00. 



Write for DescripHot Cireular 8 D. 

 Our name, hacked by over half a cenlurg of experience 

 is on all our products — Lenses, Microscopes, Field 

 Qlasses, Projection Apparatus, Engineering, and other 

 acienlific instruments. 



Boisch ^ Ipmb Optical Q. 



• SW TOaV WASHtnCTOM CHICAGO 



•A> rmAMCtM*. 



i.o>Dor. ROCHESTER.. N.Y. n**""'*"; 



CANDIES OF RARE QUALITY 





Only Mttf ehals' 



Hi^hesi Grades 

 Scientifically 

 Blended are Used 



On (he 

 Cnaracier ot 

 andy Depend* 

 its Fitness 

 ior Gift Making 



Sold by our Sales Agents Everywhere 

 in Three Sizes $lJOO-50^-25^ 



Refracting and Reflecting 



Astronomica! Telescopes 



Standard and Portable 



Visual and Photographic 



OBJECTIVES 



Computed by our associate 



DR. F. R. nOULTON 



{Chicago University) 



-V- 



5^: 



■i 



OBSERV ATOR IHS 



Specula, Planes, Eyepieces, etc. >«, 



— — — *:v 



l' "if: 



Photographs and Circulars on r^.yi t^t :: 



LOHflANN BROS. 



lllustraiion shows 5-in. with pneumaiie doct. '^EENVILLEs OHIO 



U. S. Ao 



_.je4 



