62 



understood_, we repeat a cut of the apparatus, as published 

 in the preceding Eeport of the Commission. 



ill: 



"1 



Since the report to the hist General Assembly was pub- 

 lished, through the kindness of the Park Commissioners, 

 four small ponds were annexed to th Hatching House. 



We were fearful that the small supply of water at our 

 command, and the likeliliood of its reaching a very higli 

 temperature during the Summer would be injurious to the 

 Trout, and fish of this family, inhabiting as they do the 

 colder waters, and that they would not thrive in the ponds. 

 The experience of last Summer, however was gratifying, and 

 demonstrated the feasibility of rearing the Salmonidae in the 

 ponds prepared for them. 



Last Summer was one of almost unprecedented heat, and 

 the hot spells being of protracted duration, nevertheless the 

 fish remained in good health, with very little or no mortal- 

 ity. The fish kept were of the following varieties : the 

 Land-Locked Salmon, the Penobscot Salmon, and the Cali- 

 fornia Salmon. 



The California Salmon were of those hatched at Green 

 Spring Trout Farm, in the Fall of 1874, and were, there- 

 f)re, two years old. The Penobscot and Land-Locked 

 Salmon wer3 hatched in the Fall of 1875 ; though these 

 la'.ter have not been of rapid growth, yet they are in appa- 



