OF DENISON UNIVERSITY. 5 1 



iration, or even a landscape, if no sky is present, it can be accomp- 

 lished directly from the camera, obtaining a positive on the first plate 

 in the following manner : 



Develop with any good developer. Do not develop too far, just 

 enough so that the plate is all up. In no case develop through the film. 

 In developing use a black tray in which the plate lies perfectly flat on 

 the bottom. Pour off the developer and thoroughly wash the plate. 



Now expose the plate to the light. The strength of the light 

 depends upon the blackness of the film developed. A. weak light for 

 a few mmutes gives better results than a strong light for a few sec- 

 onds. 



Be sure that the plate is in close contact with the bottom of the 

 tray, and that no light gets to the back of the plate. Return to the 

 dark room and flow a fresh developer over the plate again and de- 

 velop until the entire plate is perfectly opaque and the picture appears 

 as a positive on the back of the plate. Wash, and fix as usual. After 

 fixing without washing, place the plate into a reducing solution, and 

 reduce until the high lights are clear, and the picture stands out a nice 

 clear positive. If the plate is stained yellow, it is probably caused by 

 the developer. 



Wash very throughly in running water, dry, varnish and mount, 

 and there will have been produced a lantern slide positive, direct 

 from the camera, with the use of but one plate, one developing solu- 

 tion, and in less than half the time required the old way. This can 

 also be applied to contact printing and transparency work. 



