PROCEEDINGS OF THE 



Feb. 1th. 



Vice-Director W. Pepper, M.D., in the Chair. 



Fourteen members present. 



Mr. W. H. Walmsley exhibited mounted sections of a testicle 

 removed from a so-called hermaphrodite, who otherwise presented 

 the external configuration of a woman, and who was looked upon 

 in society as a female. The testicle exhibited tubular structure, 

 and was removed at the patient's request. 



Mr. T. W. Starr exhibited a slide showing malformation in a 

 spider, which had eight legs and nine feet. 



Feb. 24th. 

 Director S. W. Mitchell, M.D., in the Chair. 

 Eleven members present. 



March 1th. 

 Vice-Director W. Pepper, M.D., in the Chair. 

 Six members present. 



Dr. McQuillen stated that during certain experiments with the hydrate of 

 chloral, he had reason to doubt the correctness of the view of Leibrech and 

 B. W. Richardson, that it was decomposed in the blood and converted into 

 chloroform. 



March 21st. 

 Director S. W. Mitchell, M.D., in the Chair. 



Thirteen members present. 



Dr. Tyson read a paper on Class or Clinical Microscopes (see Den- 

 tal Times for April, 1870). 



Dr. Keen had had considerable experience with class-microscopes, and 

 had used them with much satisfaction, even with higher powers than those 

 named by Dr. Tyson. He had shown to his class the amoeboid movements of 

 the white blood corpuscle. He was disposed to look more hopefully than Dr. 

 Tyson upon the results to be derived from the use of the gas-microscope in 

 medical teaching. 



Dr. McQuillen had also used the class microscope largely i teaching, and 

 with satisfaction. He was disposed to think with Dr. Tyson, that the gas-mi- 

 croscope could never be substituted with advantage for the class-microscope 

 in demonstrative teaching, but simply became a further aid, assuming the re- 

 lation of the enlarged diagram, and this not always with satisfaction. 



Mr. Walmsley exhibited a four-inch lens made by Tolles, which 

 possessed a working distance of but two inches. 



He also showed some brilliant fresh-water algre, which had been 

 mounted for a year in carbolic acid water, still retaining their color 

 completely. 



