XXX REPORT OF COMMISSIONEE OF FISH AND FISHERIES. 



A report by Mr. C. J. Bottemanne contains an interesting account ol 

 the introduction of these fish into tne Netherlands. The shipment of 

 eggs of this fish in 1S77 was entirely unsuccessful, as only three fish were 

 produced out of 100,000 eggs sent. 



The transfer of the eggs the following year was more successful, as a 

 loss of only some 26 per cent, was experienced, and we had become so 

 much more expert in packing the eggs, that of the shipment made in 

 1879 the loss had been reduced to 21 per cent. When we take into con- 

 sideration the fact that the eggs were transported by wagon over a rough 

 country for about thirty miles before they could be placed in the cars; 

 then by rail across the continent to be reshipped for a two weeks jour- 

 ney across the Atlantic, and after that compelled to take another rail- 

 road journey from Rotterdam to Amsterdam, the success was somewhat 

 remarkable. 



Monsieur Bottemanne reports that most of the fish were placed in the 

 tributaries of the Meuse, a few only having been retained in the zoolog- 

 ical gardens at Amsterdam. 



The importance of maintaining a full supply of breeding fish in the 

 Sacramento and McCloud Rivers, for the purpose of obtaining from year 

 to year a stock of eggs sufficiently large to meet all demands, induced 

 an arrangement with the California commissioners by which it was 

 agreed that about one-fifth of the whole yield, hatched out at the fish- 

 ery, should be returned to the water. 



As the hatching out of these eggs necessarily takes place after the 

 close of the regular work of the commission in securing them from the 

 breeders, it was deemed expedient to accept the offer of the California 

 State fish commissioners to defray the actual expense of batching, 

 which has accordingly been paid by them in 1870, as also heretofore. 



The result of their work is seen in an extraordinary increase in the 

 number of mature fish returning from the ocean, and in the great exten- 

 sion of the industry of salmon canning. 



The Rainbow, or California Mountain Trout (Salmo irideun). 



The Crooks Greek Station. — Mr. Stone having been instructed to en- 

 large the operations of the work on the McCloud River by the propaga- 

 tion of the California brook trout, he selected a point some miles above 

 on a small tributary of the McCloud River called George Crooks Creek. 



This creek flows into the McCloud River only four miles above the 

 salmon-breeding establishment and was selected as being well supplied* 

 with clear cold water. Many difficulties were encountered in establish- 

 ing this station, as only a rough Indian trail led to the site. This neces- 

 sitated the " packing " of all the lumber and equipment necessary for 

 this station. 



During the season a dwelling and hatching house were built and the 

 necessary furniture, &c, transported to the station. 



The trout-hatching house was constructed on the same general plan 



