240 BULLETIN OF THE UNITED STATES FISH COMMISSION. 



fisli would hardly attract any attention in the regions of the Lower 

 Danube. Is this a reason why we should be discouraged or discontinue 

 these attempts ? As long as our faithful friend across the water lends 

 us a helping hand, and as long as I am privileged to serve the German 

 Fishery Association, my motto shall be "Persevere I" It may here be 

 stated that the California salmon in the piscicultural establishment of 

 Mr. Schuster, at Eadolfszell, thrived so well, that he succeeded in obtain- 

 ing from them many thousands of young fish ; and Mr. Schuster speaks 

 very highly of the healthy and rapid growth of these young fish. Whj 

 should we then discuss the question whether the California salmon has 

 been definitely acclimatized in Germany. Its value to us, I must re- 

 peat it, is principally based on the hope to supply thereby the Danube 

 and its tributaries with a migratory salmon. 



II. We may, without the shadow of a doubt, state that the second 

 fish which has been introduced from the United States, the Salmo 

 fontinalis, has been thoroughly and permanently acclimatized in Ger- 

 many. Eggs of this fish I have received at different times and from 

 different sources. The eggs, with which Mr. Livingston Stone sur- 

 prised me in January, 1879, developed very successfully, as I stated in 

 circular 1879, pp. 24, 25 ; as also a quantity of eggs which were sent to 

 me last winter by Professor Baird. As regards these last-mentioned 

 eggs Counselor Bruhus, of Eutin, Director Haack, of Hiiuingen, Messrs. 

 Schuster, Freiburg, and Staudinger, of Munich, can testify ; and they 

 cannot speak too highly of the young fish obtained from these eggs. 

 Mr. Schuster — and if anybody is an authority in these matters, it is 

 he — writes me: "The young of the Salmo fontinalis thrive very well, 

 and grow even more rapidly than the California salmon ; and we shall 

 be eminently successful with these fish." Similar results can also be 

 reported of the first-mentioned batch of eggs which were hatched in 

 Von dem Borne's establishment. Several hundred of these young fish 

 were placed in the establishment of Count Arnim, of Boitzenburg, and 

 developed so successfully in that favorably located and well-conducted 

 establishment, that as early as the autumn of 1881 several thousand 

 eggs were obtained and impregnated. A short time ago I had the 

 great pleasure of seeing thousands of these young fish at Boitzenburg 

 as also a large number of large fish, almost four years old, which for this 

 coming autumn promise such a rich harvest of eggs that, thanks to the 

 liberality of Count Arnim, I shall be able to supply a considerable num- 

 ber of piscicultural establishments with such eggs. I may, therefore, 

 well say that Salmo fontinalis has been permanently acclimatized in 

 Germany. 



Is this to be considered a gain ? I am firmly convinced of it, for the 

 Salmo fontinalis is a "saibling," and, as I expect to show presently, a 

 " saibling " possessing the ability to spread to an astonishing degree. If 

 I am not mistaken, it is this fish, which we at first took for a kind of 

 brook-trout, and which was found to be a "saibling" by Director 



