SLOW GROWTH OF THE FRY. 109 



" In corroboration," says my authority, " I once had occa- 

 sion to dam up a small portion of a branch of the Save, at 

 Jonserud, the upper end so effectually as altogether to debar 

 communication with the river above ; that is as regarded fish, 

 for the water found access to the pond amongst the stones of 

 which the dam was composed. At the other end indeed 

 there was so very small an outlet that it was hardly possible, 

 much less probable, for even fry to ascend or descend. 

 These dams were constructed after the salmon had spawned 

 in the autumn, and the space enclosed being full of their 

 roe, the pool, during the succeeding summer, swarmed with 

 fry. Beyond, however, observing that they were of a very 

 diminutive size, and too small to take fly or bait of any 

 kind in short, that they were of the first family I paid 

 but little attention to them. But the second summer the 

 pool was full of fish of five or six inches in length, and 

 of that size only; and as they were very eatable fellows, I 

 captured numbers of them. They in every respect resem- 

 bled the second family common to the Save, but they were 

 a trifle fuller and larger, which I attributed to more sunshine 

 and less snow-water in short, to a greater degree of warmth. 

 The second winter was unfortunately a severe one, and they 

 all died." 



