COLOR PHOTOGRAPHY 



637 



1 mill. Tissue is turned face up again and forced under water by rocking the tray. The tissue, 



being now quite limp, will remain under water with gentle rocking. 



2 min. 15 sec. The blue bromide is now removed, without draining, from water in which it was placed 



after the final wash, is placed on the apron in coincidence with the pencil outline, as 

 indicated on Fig. 22, and is left in this condition. 



2 min. 55 sec. The blue tissue is now removed from water and held in a vertical position to permit 



draining for 15 sec. 



3 min. 10 sec. Blue tissue is placed, face up, on bottom of adjacent tray. 



3 min. 15 sec. First part of carbro solution poured onto it and tray quickly rocked to insure even 

 flowing of solution over entire surface of tissue. The tray is kept rocking to insure that 

 tissue is always covered with solution. 



3 min. 52 sec. The tissue is removed from the carbro solution and, without draining, placed on the 



apron at the opposite side of the bromide and in coincidence of the pencil Unes, as 

 indicated also on Fig. 22. 



4 min. Tissue and bromide are rolled into contact through the squeegee and the apron with the 



sandwich inside removed from the chute at the lower side of the automatic squeegee. 



Theapron is gently lifted to avoid separating the bromide from the tissue; the sandwich 

 is completely peeled off the apron and placed on a clean blotter; and the surface 

 moisture is gently blotted off with another clean blotter, after which the bromide and 

 its adherent tissue are placed away, preferably on a clean blotter, until ready to be 

 stripped apart. 



The used apron is now wiped off with a clean rag and hung up to dry in a convenient 

 corner. The second dry apron is inserted in the automatic squeegee, opened, and a 

 few drops of water sprinkled onto it in the same manner as was done for the first apron. 



The carbro tray is next emptied in preparation for the second quantity of fresh solution. 

 6 min. The red tissue is now placed in the tray of water face up and handled in the same manner 



as the blue tissue. 



6 min. 30 sec. Red tissue turned face down in water and corners gently bent back to help flattening. 



7 min. Red tissue turned face up and kept under water by rocking tray. 



8 min. 15 sec. Red bromide placed on the celluloid apron. 



8 min. 55 sec. Red tissue lifted out of water and drained- for 15 min. 



9 min. 10 sec. Red tissue placed face up on bottom of tray. 



9 min. 15 sec. Second portion of carbro solution poured over red tissue and tray rocked quickly and 



continuously to insure even flow of carbro solution over the full area of tissue. 



10 min. 37 sec. Red tissue removed from solution and without draining placed on apron. 

 10 min. 45 sec. Red tissue rolled into contact with bromide. 



Sandwich is removed from within the apron surface, moisture blotted off and placed 

 away to allow chemical action. 



Apron wiped off and put away. Third apron placed in the automatic squeegee and 

 sprinkled with water. 



Second part of used carbro solution thrown away. 



Yellow tissue is immersed in water bath face up and forced under water. 



Yellow tissue turned face down and again treated in same way as previous tissues. 



Tissue turned face up in water and kept immersed by rocking tray. 



Yellow bromide placed on celluloid apron. 



Yellow tissue removed from water and drained for 15 sec. 



Yellow tissue placed face up on bottom of tra5'. 



Third part of carbro solution poured onto yellow tissue and tray rocked. 



Yellow tissue is removed from solution and, without draining, placed on apron. 



Yellow tissue and bromide are rolled into contact in automatic squeegee. The sand- 

 wich is removed from within the apron, surplus moisture blotted off and put away. 



The used-up carbro solution is now thrown away and a plate of glass prepared for 

 squeegeeing the tissues on the celluloids. This operation is best done by placing the 

 glass on a wood rack in the sink. A very convenient arrangement is to place the 

 glass plate on two small wood blocks within a large tray for the purpose of collecting 

 the water thrown off during the squeegeeing operation. 

 18 min. A piece of celluloid temporary support is removed from the dilute alum bath and rinsed, 



the surplus moisture from its back removed by sliding it on a piece of blotter and 

 placing on top of the prepared glass with the waxed surface (which is now completely 

 wet) face up. If too much moisture is left on the back of the celluloid, it will not 

 adhere sufficiently to the glass surface, and it will slide during the squeegeeing opera- 

 tion. The blue tissue is stripped by a steady pull from its bromide, passed face down 

 in cold-water bath, and, without draining, placed face down on the celluloid support. 



A piece of thin Kodaloid (0.005 in. thick) is now laid on the tissue to prevent it being 

 damaged with the flat squeegee and the whole thing firmly squeegeed back and forth 



