22 



at Central Station. Last summer the last trout died at 

 82*^. The other species died sooner." 



The Chair said : " New York State has practically dis- 

 continued the breeding of the California trout." 



Mr. Clark said : "In our streams the best work has not 

 been done with California trout on account of tempera- 

 ture." 



Mr. Ford said : " There are two streams in Pennsylvania 

 tliati now have in mind in which trout were planted. The 

 trout left one of those streams, which is a comparatively 

 cold stream in the spring, and ran into the other, which is 

 still colder." 



Mr. Mather said: "What Mr. Ford said is just what 

 occurred to me ; that if the water of the stream is not 

 warm, the trout will not run down to another where the 

 water is warmer, but will naturally run to where the wa- 

 ter is cold. I think perhai)s there are other conditions that 

 we do not understand why our brook trout run down stream 

 and go away as our rainbow trout do here, but certainly I 

 should think the temperature would drive them out." 



Mr. Seal said : "I find that in Mexico they appear to 

 accomplish more with the rainbow trout than we can here, 

 but they cannot do much with any of the other species of 

 trout." 



Mr. Mather then read a paj^er on the breeding habits of 

 the yellow perch. After the reading of the paper, the 

 Chair called for discussion. 



Mr. Seal said : " I would like to add the following in- 

 formation on the subject. We have numbers of yellow 

 perch spawn in our aquaria at Central Station ; they 

 spawn from November to April. This is due to the high 

 temperature. One of our watchmen, Mr. William May- 

 nard, observed their manner of spawning, which is very 

 much like that of the gold-lish in the extrusion of the eggs 

 and fertilization, except that it takes place on the bottom. 

 The spawn is deposited in two parts. We measured the 



