342 FIFTEENTH ANNUAL REPORT OF THE 



One lot of eggs of this species purchased in Pennsylvania caused a 

 good deal of anxiety at the Fulton Chain Hatchery during the process of 

 development, but they furnished good healthy fry notwithstanding. The 

 cause of this trouble probably lies in the fact that the summer of 1908 

 was unusually dry and the trout eggs were hatched in brook water instead 

 of spring water, which was the usual supply at the hatchery in Pennsylvania. 



On March 17, 1909, Foreman Davidson reported that the fry of this 

 species were ready for distribution from the Pleasant Valley Station. 



On May 7th a shortage of about 170,000 brook trout needed to fill 

 applications at the Pleasant Valley Station was announced by Mr. David- 

 son. This was due chiefly to losses of fry through gill inflammation. 



Some yearlings in one of the old stone ponds at Caledonia, in 1909, 

 had made remarkable growth; a few of them were nearly nine inches long. 

 All of the brook trout appeared to be free of the gill louse which formerly 

 caused so much trouble. 



Mr. C. L. Capron, of Malone, N. Y., in August, 1906, received six finger- 

 ling brook trout which he placed in a small artificial pond in his show- 

 window at Malone; the pond is six inches deep with an area of 2\ x 4 feet 

 and is fed by pure mountain spring water. Within a year five of the trout 

 were lost by jumping out of the pond; after this a screen was placed over 

 it and the remaining trout lived until February of 1909, when it died. 

 At death it weighed one pound, five ounces. About two weeks before it 

 died Mr. Capron noted a large number of eggs on the bottom of the pond 

 and a week later there was another deposit of eggs; that same afternoon 

 the trout died. The fish was three inches long when received and thirteen 

 inches at death. 



Mr. Spencer Aldrich, on August 16th, forwarded some objects taken 

 from the stomach of a brook trout weighing about one-fourth pound, and 

 requested that they be identified. The objects seemed to be the partly 

 petrified crystalline lenses of some fish which was evidently eaten by the 

 trout. 



In receiving eyed eggs of brook trout from various sources, Mr. R. R. 

 Brown, of Bemus Point, where the water supply is from an artesian well, 

 finds that eggs packed in moss or sawdust arrive in the best shape, while 

 eggs packed in ice are very cold and have to be placed in the trough very 



