Men of Science 



The signs and symbols used in 

 your everyday work are provided 

 for in special keyboards prepared 

 for the .Home 

 Typewriter, the 



Self-Starting 

 Remington 



Tell us your needs and we will sub- 

 mit a keyboard layout for your work. 

 No obligation, of course, on your part. 



Remington Typewriter Company, Inc. 



374 Broadway, New York City 



FINE INKS AND ADHESIVES 



For those who KNOW 



Higgins' 



Are the Finest and Best 



Drawing Ink« 

 eternal Writinc Ink 

 Engrossing: ink 

 Taurine Mucilage 

 Photo Mounter Paste 

 Drawing Board Paste 

 Liquid Paste 

 Office Paste 

 Vegetable Qlue, Etc. 



Inks and Adhesives 



Emancipate yourself from the use of corroiive and 

 ill-smelling inks and adhesives and adopt the 

 Higgins Inks and Adhesives. They will bea 

 revelation to you, they are so sweet, clean, well 

 put up, and withal so efficient. 



At Dealers Qeneraliy 



CHAS. M. HIGQINS & CO., Mfrs. 



Branches: Chicago, London 

 271 Ninth Street Brooklyn, N.Y. 



Combined Balopticon 



For Lantern Slides and Opaque Objects 

 Price $135 



^ausch^^lomb 



BALOPTICON 



THE PERFECT STEREOPTICON 



for every practical form of optical projection is 

 again in the market, backed by increased facilities 



w^hich have been occupied in wrar service of 



arnost significant character. 



Our release from this service is of course 

 gradual. As the demands made upon us 

 by the government are lessened from month 

 to month, however, we are enabled to in- 

 crease deliveries to our other patrons. 



Write for Balopticon catalog, with price list of our re- 

 vised line, and inform us regarding your requirements. 



Bausch ^ Ipmb Optical (5. 



654 ST, PAUL STREET, ROCHESTER, N.Y. 

 NEW YORK WASHINGTON CHICAGO SAN FRANCISCO 



Leading American Makers of Photographic Lenses, Microscopes, Projection Apparatus {Balopticora) , Ophthalmic Lenses and 



Instruments, Photomicrographic Apparatus, Range Finders and Gun Sights for Armu and Navu, Searchlight Reflectors, 



Stereo-Prism Binoculars, Magnifiers and Other High-Grade Optical Products. 



I 



