1068 TllAA'SACTIONS OF THE AMERICAN INSTITUTE. 



m O C E E D I N a s 



PHOTOGRAPHIC AL SECTION 



ameeioa:^^ ii^stitute. 



May 4th, 1869. 



ABEAnAM BoGARDUP, Esq., Yice-President of the Society, ia the chair ; Mr. Oscar 

 G. Masox, Secretary. 



Mr. Kurtz exhibited a very fine specimen of a photograph burnt in 

 on porcelain, bj his process, as detailed at a recent meeting of the 

 section. He also exhibited a beautiful sample of his ''Rembrant 

 eifects," produced bj a peculiar method of lighting the sitter. The 

 print was on albumen paper, and finished in India ink. 



Mr. Mason presented two sterographs, showing the eftects of 

 syphilitic necrosis on the skull. 



Mr. Tliomas presented a fine imperial card print, copied from one 

 of the celebrated " Meade daguerreotypes," which were made by 

 Mr. Meade, of Kew York, Avhile visiting, soon after his great dis- 

 covery. 



Mr. Newton gave the details of some recent ex])(?riments in the 

 use of the coftee process, illustrating his remarks b}^ a large number 

 of stereoscopic negatives, which he had made and developed with 

 the following solution : 



"Water 16 ounces. 



Gelatine 10 grains. 



Annnonic sulphate of iron 1 ounce. 



Proto sulphate of iron. 1 ounce. 



Glocial acetic acid -1: drachms. 



Tartaric acid . . » S drachms. 



Mr. Chapman gave a sketch of some work which he had recently 

 done on dry plates, and exhibited a negative made by tlie collodio 

 bromide of silver process, which he had worked out some two years 



