MEDICAL MICROSCOPICAL SOCIETY. 205 



was not fair to speak generally on the subject. The escape of 

 colourless blood-corpuscles was undoubtedly au abundant source of 

 pus whatever other origin it might have. 



Dr. Evans asked what effect curare had on the tone of the 

 vessels. 



Mr. White asked if Dr. Bruce had tried the effect of chlorof)rni 

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

 or stoppage in the circulation as a result. 



Mr. Schiifer preferred the mesentery of the toad to that of the 

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



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

 ligature for the frog's tongue, and said that the use of curare might 

 be obviated by immersing the frog for a short time in warm 

 water. 



Dr. Bruce, in reply, stated that he was not aware that curare 

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

 tried chloroform for frogs. He also slated that the same results 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. Rutherford's 

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

 the upper surface, through which the cylinder containing the 

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

 the cutting surface. 



Dr. Matthews showed another modification of the same micro- 

 tome, 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. 



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-spectroscope, 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. 



Dr. Bruce then exhibited his specimens illustrative of inflam- 

 mation. 



At the tenth ordinary meeting, held Friday, December 19th, 

 Jabez Hogg, Esq., President, in the chair — 



Mr. J. W. Groves read a short paper " On methods of examining 

 circulation and urinary deposits by means of water-tight caps over 

 the higher powers of the microscope, after the fashion of Mr. 

 Stephenson's submersion microscope." By this means he said that 



VOL. XIV, NEW SER. O 



