1078 Transactions of the American Institute. 



The peculiarity of the formula was the use of muriatic acid in con- 

 siderable quantity. 



Mr. Anthony had upon trial found that the process gave very fine 

 results, and recommended its trial by those present. 



In answer to an enquiry by Professor A^anderweyde as to whether 

 any of the members had tried the use of florine, which he under- 

 stood the photographers of Paris had worked with success, Mr. 

 Anthony stated that he had experimented with florine some years 

 ago, but failed to produce satisfactory results. 



Mr. Newton had also used florine, but met with little success. 



Professor Tillman said that doubtless many of the members pres- 

 ent would recollect the remarks which he had made upon the use of 

 florine at a meeting some years ago, and he yet believed that com- 

 pounds of chlorine and florine would not be found as sensitive as 

 those of iodine and bromine, although, like the latter, they belonged 

 to the halogens, and might contain some property available for pho- 

 tography. 



Mr. Mason called attention to the importance of artificial light 

 suitable for photographic work in dull or stormy weatlier. After a 

 short discussion upon artificial light, in which Messrs. Boyle, Hallen- 

 beck, Vanderweyde, Anthony and Chapman took part, it was decided 

 to take up the subject of solar and ai'tificial light for further consid- 

 eration at the next meeting. 



The Section then adjourned to the first Tuesday in February. 



February 1, 1870. 



Vice-President Bogaedus in the chair ; 3Ir. O. G. Mason, Secretary. 



The Secretary reported a list of articles and pictures which had 

 been donated to the Section during the year 1869. 



Mr. Hull presented, for Mr. Kurtz, a series of ten very fine impe- 

 rial card prints which very plainly illustrated the great variety of 

 lighting possible to produce in one room, each print showing dilfer- 

 ent treatment, and all good. 



Mr. Bogardus presented an eight by ten portrait print of Henry 

 Meade, father of Meade Brothers, who were among the first and 

 most successful daguerreotypists in New York. 



Captain Russell presented ten by thirteen prints from negatives 

 which he had made during the last summer amono- the Wachito 



