Photographical Section Proceedings. 1029 



January 7, 1868. 

 Vice-President Joy in the chair; O. G. Mason, Secretary 



Minutes of the last meeting were read and approved. 



Mr. Newton exhibited a very fine series of silver prints, which 

 he had made from negatives obtained of Messrs. Jordan, Bogardus 

 and Thomas. The special object in exhibiting the series was for 

 the purpose of comparing American prints with samples from M. 

 Adam Salomon, of Paris, which were laid before the Section at the 

 last meeting. 



Several members pronounced the prints made by Mr. Newton, 

 fully equal to those made by Salmon. 



Mr. Mason exhibited a life-size carbon print, by Mr. Swan, of 

 England; subject, portrait of Raphael, painted by himself. 



Prof. Tillman called up the subject of carbon prints, at the recent 

 fair of the Institute, and requested Mr. Joseph Dixon to explain the 

 process of carbon printing which he had used many years ago. 



After spealiing of carbon printing in general, and the* great 

 fidelity with which he had been able to few simile bank notes, ho 

 gave a very interesting account of the picture which he had made by 

 the daguerreotype process in the month of September, 1839, which 

 pictures he believes to be the first jportrait made by the daguerreo- 

 type process in America. After the close of Mr. Dixon's remarks, 



Prof. Tillman gave a resume of the various claims which had 

 been made for the production of the first portrait, and read 

 extracts from two letters in proof of Mr. Dixon's claim. 



Ml'. Hollenbeck exhibited an oil painting by Mi\ Boyle, who had 

 devised it as a means by which vignettes could be printed Avith a 

 light center graduated to a dark shade round the edge or margin 

 of the print. A negative from the painting would have an opaque 

 center, which would protect the vignette before which it was placed, 

 while the margin would receive the light transmitted through the 

 thinner portion of the negative. 



Mi\ Weeks explained a novel method by which he had produced 

 vignettes in the camera. 



Mr. Anthony exhibited several very beautiful transparencies 

 made upon dry plates prepared with a linseed preservative made 

 by steeping flax seed in a solution of acetic acid, one ounce, and 

 water one ounce. He did not find it necessary to apply heat in its 

 preparation. The mucilage thus made should be considerably 

 reduced, so as to flow readily over the plate, leaving a very thin 



