26 



h. Zeiss telephoto lense, capable of doing instantaneous 

 work. 



c. New Cycle and Hand Camera. 



d. New Platini paper — producing Platinotype effects. 



e. Series of framed prints, showing the work of Platini- 

 paper. 



2. Exhibits of E. & H. T. Anthony & Co. 



a. Farrand Vignetter. 



b. New Dalmeyer Stigmatic lense, F. 6th Series, No. II. 



c. Frame of Photographs, illustrating New Dalmeyer Stig- 

 matic lense combinations. 



d. Frame of Photographs, illustrating American Aristo- 

 type paper — with new toner. 



3. Exhibit of Bausch & Lomb Optical Co. 



a. Iconoscopes — Three sizes. 



b. Ray Filters — Styles A and B. 



c. Zeiss convertable. Series VII. A, No. 8. — Lense with 

 diaphragm shutter and telephoto attachment. 



d. Zeiss convertable, lense C, set with diaphragm shutter. 

 All manufactured by the above company. 



e. Photographs, showing effects with and without " Ray 

 filter." 



4. The Joly-Sambra Co., Montclair, New Jersey. 



a. Demonstration of new color process by electric light. 



b. Lantern slides and screens. 



PHYSICS. 



In Charge of Wm. Hallock. 



1 . Set of Photographs Showing Widening of Spectrum 



Lines with Increase of Pressure. Exhibited by 

 Prof. J. S. Ames, Johns Hopkins University. 



2. Photographs of Projection Lantern. Exhibited by 



Prof. Le Conte Stevens, Trov, N. Y. 



