44 PROCEEDINGS OF SOCIETIES. 



subject. The escape of colourless blood corpuscles is undoubtedly an 

 abundant source of pus, whatever other origin it might have. 

 . Dr. Evans asked what effect curara had on the tone of the vessels. 



Mr. "White asked if Dr. Bruce had tried the effect of chloroform 

 vapour on a curarized frog, because he had noticed a regurgitation or 

 stoppage in the circulation as a result. 



Mr. Schafer preferred the mesentery of the toad to that of the frog, 

 because it is longer, and has a lymphatic sac in its centre. 



Mr. Chui-ton considered that these experiments were not calculated 

 to forward our knowledge of the treatment of inflammation in man, but 

 rather to show the origin of pus. 



Dr. Matthews suggested the use of a spring-clip instead of a liga- 

 ture for the frog's tongue, and said that the use of curara might be 

 obviated by immersing the frog for a short time in warm water. 



Dr. Bruce in reply stated tliat he was not aware that curara had 

 any influence upon the process of inflammation. He had not tried 

 chloroform for frogs. He also stated that the same result as Dr. 

 Matthews produced by placing a frog in warm water might more 

 conveniently be brought about by holding the frog in the hand for a 

 few minutes. 



Mr. Needham then showed his modification of Dr. Eutherford's 

 microtome, which consisted in its having a movable glass plate on the 

 upper sui-face, through which the cylinder containing the imbedded 

 specimen projected nearly, but not quite, to the level of the cutting 

 surface. 



Dr. Matthews showed another modification of the same microtome, 

 and also a diagonal razor, with the shoulder ground down flush with the 

 rest of the blade, which he found more handy than the ordinary razor. 



A vote of thanks was accorded to both these gentlemen. 



Mr. Miller advocated the use of a steel plate for the upper surface 

 of a microtome, the great drawback to its use being the liability to 

 rust. He preferred a thick razor. 



Mr. Clippingdale ' showed a micro-sjiectroscope, in which two 

 spectra could be compared in one and the same field. 



Mr. Kesteven described a method of microscopic drawing in^which 

 the neutral-tint glass of Dr. Lionel Beale's reflector was removed, and 

 an ordinary thin cover-glass substituted. 



The Secretary announced that invitations had been received from 

 the Croydon Microscoj^ical Society and the South London Micro- 

 scopical and Natural History Club to any of the members who might 

 wish to exhibit at their approaching soirees. 



The names of several gentlemen for election at the next meeting 

 were read. 



The next meeting was announced to take place on December 19th, 

 at eight o'clock, when the nomination of officers for the ensuing year 

 would take place, and the proceedings terminated. 



Dr. Bruce then exhibited his specimens illustrative of inflam- 

 mation. 



The Anniversary Meeting will take place January IG, 1874. 



