LIV BIOLOGICAL SOCIETY OF WASHINGTON. 



tuberculosis Koch, the bacillus of Phthisis, and summarized the 

 present state of knowledge as to the nature of tuberculosis. Dr. 

 S. M. Burnett stated that tuberculosis frequently occurs spontane- 

 ously in tlie eye. Dr. D. E. Salmon defended the reputation of 

 Toussaint as the discoverer of micrococcus in tuberculosis, and 

 remarked that Koch's bacillus is not generally admitted to be re- 

 lated to the cause of tuberculosis; that it may or may not be. 



Dr. Salmon exhibited specimens of infectious tuberculosis in 

 cattle — the omentum as well as the liver, which was much enlarged, 

 and various glands being thickly covered with large tubercles. 

 These animals were short-horn cattle, of well-known pedigree. 

 in which for thirty years no disease had existed. The disease was, 

 therefore, not hereditary. As soon as one steer had become in- 

 fected the others in the herd were taken down with the same dis- 

 ease. No traces of Bacillus tuberculosis had been discovered. 



Mr. C. W. Smiley read a paper on What Fish-Culture has 

 FIRST to Accomplish,* in which he stated that fish-culture cannot 

 be expected to perform the impossible task of filling the waters of 

 a continent to overflowing with an inexhaustible supply offish, but 

 that it will have to put forth the utmost effort to prevent the entire 

 annihilation of the fish supply by the uncontrollable activity of 

 the fishermen. 



Dr. Bean, Mr. Earll, and Mr. Goode participated in the discus- 

 sion of this paper. 



Dr. Tarleton H. Bean remarked that, in his opinion, there was 

 no general impression that fish-culture was going to immediately 

 fill the rivers with fish ; that fish-culture never had made such a 

 claim. It did, however, profess to be able to produce fish econom- 

 ically and in greater abundance than could be produced by the 

 natural process; that, furthermore, fish-culture was simply one of 

 a series of means to an end — the object aimed at being the restora- 

 tion of the fisheries ; that fish-culture was one of the means for the 

 accomplishment of that end. In his opinion it was quite as necessary 

 to protect fish as to produce them, for if streams are filled with ob- 

 structions and impurities, no amount of fish-culture could restore 

 the fishery in them. The obstructions must be overcome and the 



■" 18S4. Smu.ey, Charles VV. Wliat Fish CAilture has first to Accomplish. 

 <;i3iilletiii U. S. Fish Commission, IV, pp. 65-68, 1S84. 



