594 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



with us increase almost as fast as the herring, are now raised by many- 

 farmers, whose income is by this means considerably increased. 



In Carinthia, the only fish-breeding institution is at present at Lolling, 

 which, however, on account of the limited extent of water, confines its 

 rpoduction to the hatching and raising of young fish, (annually 12,000 to 

 18,000 Salmo salvelinus, lake and brook trout.) 



In Tyrol, a fishing-club has been formed at Innsbruck, which, in 

 December, 1870, received 20,000 impregnated salmon-eggs from Mr. 

 Kuffer in Munich, from which, however, no more than 2,000 fish were 

 raised. The club has not been discouraged by this failure, but believes 

 if the hatching proves successful, if the eggs are carefully watched and 

 treated, if the young fish are placed in favorable localities, and if some 

 perseverance is shown, that it may do a great deal of good to Tyrol. 



Mr. Glanzl, the city-fisher of Lienz, in Tyrol, has been more success, 

 ful, as, according to his report, he was able, from 18G5 to 1870, to transfer 

 260,000 young fish from his establishment at Moosbruunen, near Lavaut, 

 o other waters. He raises principally trout and the Thymallus: and, 

 as the spawning seasons of these two species of fish are far apart, the 

 same establishment can be used for both. The finer the specimens 

 which have been employed in artificial hatching the healthier and bet- 

 ter will the young fish be. The catching of the adult fish previous to 

 the spawning season, and their being kept in boxes till the spawn has 

 matured, is considered useless by Glanzl, as they do not ripen properly, 

 and as the female fish frequently does not let the eggs go. 



According to the observations made by others, the catching of fish 

 about to spawn is only considered hurtful if the eggs are not pressed 

 out at once, while fish caught prior to the spawning-season mature their 

 ova even in an inclosed space. 



Glanzl made the observation that the hatching of the eggs in metal 

 troughs, especially those made of zinc, succeeded much better when glass 

 rods were laid in the vessels, which, as he thinks, neutralize the bad 

 effects of oxidation. 



He expresses his conviction that only by the artificial process, and by 

 their more general industrial application, can an increase of fish be pro- 

 duced in the particularly suitable territory of the Drau and Isel, which 

 is so rich in springs. 



At the suggestion of the agricultural society, he accepted a subsidy 

 of $200 from the ministry of agriculture. 



In Trius, a fisherman by the name of Schliereczauer has stocked sev- 

 eral brooks with trout; and in Tliiersee, Mr. Lerperger, a merchant, has 

 devoted much time to this industry. 



In Vorarlberg, the artificial hatching of fish has been introduced by 

 Mr. Tiefenthaler, a landed proprietor of Meiningen, in the district of 

 Feldkirch. As early as 1802, he endeavored to obtain fish-eggs for the 

 purpose of hatching them, in which, however, he was unsuccessful for a 

 long time on account of the prejudices of the fishermen in that neigh- 



