692 OPTIC PROJECTION 



Underwood & Underwood, 3 and 5 West igth Street, New York. Magic lan- 

 terns, lantern slides showing tours of the world. 



Valentine & Company, 456 Fourth Ave., New York. Valspar varnish for 

 making glass boxes, etc., 3940. 



Voigtlander & Sohn, A. G., Optical Works, Braunschweig, Germany. Micro- 

 scopes, photographic objectives and cameras, projection apparatus, fig. 124, 

 142. 



W. Watson & Sons, 313 High Holborn, London, England. Microscopes, 

 Projection apparatus and accessories. 



Westinghouse Electric Manufacturing Company, Pittsburg, Pa. Rectifiers, 

 transformers, balance coils, motion picture, motor-generator set, etc., etc., 

 68 1, 723, 736, 739. 



Weston Electric Instrument Company, Newark, N. J. Voltmeters and 

 ammeters, etc., fig. 133, 145, 272-273, 662, 664, 666, 700, 7020. 



Whyte Whitman Company, 36 East 23d St., New York. Moving picture 

 cameras. 



Williams, Brown & Earl, 918 Chestnut Street, Philadelphia, Pa. Microscopes 

 and accessories, Laboratory supplies, Projection apparatus and moving 

 picture machines and lantern slides, fig. 32, 52, 59, 72-73, 98-99, 164-165, 

 598. 



Carl Zeiss Optischc Werkstaette, Jena, Germany. All kinds of optical appara- 

 tus; Microscopes and projection apparatus, fig. 95, 123, 128-129, 1 5&> 217- 

 219. 



Joseph Zentmayer, manufacturing optician, microscopes, spectacles and 

 lenses of all descriptions etc., 226-228 South I5th St., Philadelphia, Pa. 



See also the list of spectacle manufacturers, p. 651. 



