SALMO HUCHO. 265 



for their migration in spring, having caught 

 several in April, in streams connected with the 

 Save and Laybach rivers, which had evidently 

 come from the still dead water into the clear 

 running streams, for they had the winter leech, 

 or louse of the trout upon them : and I have 

 seen them of all sizes, in April, in the mar- 

 ket at Laybach, from six inches to two feet 

 long; but they are found much larger, and 

 reach 30, or even 40 pounds. It is the opi- 

 nion of some naturalists, that it is only a fresh- 

 water fish; yet this I doubt, because it is 

 never found beyond certain falls as in the 

 Traun, the Drave, and the Save; and, there 

 can be no doubt, comes into these rivers 

 from the Danube ; and probably in its largest 

 state is a fish of the Black Sea. Yet it can 

 winter in fresh water; and does not seem, 

 like the salmon, obliged to haunt the sea, 

 but falls back into the warmer waters of the 

 great rivers, from which it migrates in spring, 

 to seek a cooler temperature and to breed. 

 The fishermen at Gratz say they spawn in 

 the Mur, between March and May. In 

 those I have caught at Laybach, which, how- 

 ever, were small ones, the ova were not suf- 



