394 PROCEEDINGS OF THE SOCIETY. 



Mr. Scourfield gave an exhibit of the Green Paramecium {P. 

 Bursaria). 



A vote of thanks was accorded to Mr. Scourfield. 



Mr. H. M. Carleton, B.A., read a " Note on Cajal's Formalin-silver 

 Nitrate Impregnation Method for the Golgi Apparatus." The paper 

 was accompanied by lantern illustrations and microscopical slides, and 

 will appear in the Journal. 



After some comments by Dr. Murray, the Chairman said that he 

 could not help feeling that they must still look with considerable 

 caution upon the use of the silver salts. It would be extremely interest- 

 ing to know if different formulae had been used as the developing 

 agents^ because in photo-chemistry it had long been demonstrated that 

 different developing agents, such as pyrogallic acid, iron, amidol, 

 hydrokinone, or metol, in combination with varying quantities of sul- 

 phite and carbonate of soda, had a marked effect on the silver salts, 

 with the result that one would in all probabiUty get a varying amount 

 of deposition of silver, which might lead to a totally wrong im- 

 pression of what was being looked at. Mr. Carleton's paper was a 

 very valuable one, and they were glad to hear that there was the 

 possibility of more interesting material from him coming before the 

 Society in the future. He would ask the meeting to accord Mr. Carleton 

 a very hearty vote of thanks. 



This was carried by acclamation. 



Mr. Rawlins read a Report on the Collection of Metallurgical 

 Specimens presented to the Society by Sir Robert Hadfield, Bart. 



The Chairman said that the Society owed a debt of gratitude to Sir 

 Robert Hadfield for the valuable collection of specimens he had pre- 

 sented. The science of metallurgy had developed in an extraordinary 

 way in the past few years, and he was sure that it would be of consider- 

 able value to the Fellows of the Society to have the opportunity of 

 examining the specimens that had been exhibited. 



Mr. Rowley asked what method was adopted to preserve the surfaces 

 of the specimens. He suggested they might be covered with glass for 

 low-power work, and dupHcates could be obtained for high-power work. 



Mr. Rawlins replied that he had tried various methods of covering 

 surfaces, but the defect of all of them was that when using vertical 

 illumination they caused a scattering of light. He mentioned that a 

 catalogue of the specimens was in preparation and would be ready 

 shortly. 



Mr. T. G. Elliott gave an exhibition of Lantern Slides of Metal- 

 lurgical Photomicrographs, and drew attention to the fact that Dr. 

 Sorby did cover his specimens with glass, but they did not do that 



