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Show Color Photography. 'BJ Science for .Inn. 30 hns nn account of tho process of color photography jflj recently patented by Mr. Miley ot Lex- .BJ Ington, Va. Negatives aro prepnrod BJ by tho tricolor process, using three BJ scnsltbcd plates nnd thrco screons, 'Bfl red, green and violet. For tho red 'IB screen nn otthochromntlc pinto flowed ( with a cyanln solution Is used; for iflBJ tho green screen nn orthochromatla yflfl pinto Is used, nnd for thu violet Hereon BJ a plain gclutln bromldo plato. Thero BJ aro thus obtained thrco negatives BJ varying In density lu tho different SBJ areas according to tho color values 1BJ of tho thrco primary colors In tho 'BJ corresponding areas of tho object 'BJ taken. 'M Prints nro mado from theso ncgn- Jfl tlvos by tho ueo of blchromatlzed gel- BJ ntlno pigment paper (carbon tlsjuo). BJ Tho pigment papers Used aro red, ycl- BJ low and hluo. Tho bluo paper Is iflfl printed from tho red screen nogntivo, jBJ tho red paper from tho green screen (flfl negative, and thu yellow paper from BJ tho violet screen negative Thoso thrco aB printed films aro Uien suporposod upon Bl transfer paper, tho result being a col- BJ or photograph which Imitates tho col- BJ ors ot tho object with marvelous ac- jBJ curacy. Copies of oil paintings aro 'IJ very successfully mado. Tho process . Bfl can no longer bo consldored In Its ex- ?BJ porlmcntnl stago, ns it has now been Bj in commercial uso for a matter of two jBJ yenrs. ;BJ tfll |