Proceedings of the Photographical Section. 1077 



fully understood at future exhibitions, he offered the following reso- 

 lution, to be laid before the Board of Managers as the sense of the 

 Photographical Section : 



Resolved, That all photographs which are not retouched upon the 

 positive, except for the removal or obliteration of jjin-Jwles, comets, 

 or such imperfections as may result from trifling defects in negative 

 or paper, shall be termed _pla 171 pkotogy^ap/is. 



After discussion by Messrs. Hull, Kurtz and Mason, the resolution 

 was unanimously adopted. 



The Section then adjourned to the first Tuesday in January, 1870. 



January 4, 1870. 



Prof. S. D. Tillman iu the chair; Mr. O. G. Mason, Secretary. 



Mr. Mason exhibited a cabinet size print, made on plain Sax paper, 

 in year 1854, and tone.d iu the ordinaiy compound bath of hyponi- 

 photi and gold, then in general use. The print showed but little, if 

 any, changes. Mr. Hallenbeck, who received the print from the 

 maker, Mr. H. O'JSTiel, after making some remarks regarding the pro- 

 cess used, presented it to the Section as a sample of the early work 

 on paper in New York. 



Mr. Weeks exhibited a small vignette, on melainotype plate, and 

 described a reflector of silvered white crystal glass, which he used 

 for reversing the image iu his camera. He stated that he was able 

 to photograph a figure reflected from this glass in less time than was 

 required if the glass was removed, and the figure photographed direct 

 without reflection. 



Mr. Bierstadt presented a copy of the specifications of J. Albert's 

 patent on the Albertype, which was read by the secretary ; then fol- 

 lowed a general discussion upon Albert's process, its merits and 

 demerits. 



Yarious methods for obtaining reversal of the image were suggested 

 by members. The use of a reflector in making the negative ; work- 

 ing through the glass plate supporting the film in the camera ; 

 rendering the light parallel by tlie use of a lense, or a long box, and 

 printing with a negative ; were among those named. 



Mr. Hallenbeck called^attention to a recently published formula, 

 introduced by H. O'Niel, for sensitizing albumen paper, which was 

 discussed by Professor Vanderweyde, Mr. Newton and Mr. Anthony. 



