AMERICAN FISHES IN ARGENTINA. 96 1 



York early in June, 1904, with 20,000 eggs of steelhead trout {Salmo gairdneri) 

 and 50,000 rainbow trout (Salmo irideus) eggs. Off the coast of Brazil the 

 steelhead eggs commenced hatching rapidly and before reaching Rio Janeiro 

 these had all to be put overlaoard. The rainbow trout eggs carried very badly, 

 and nearly all were lost by July 23. On this date the few remaining live eggs 

 were planted in Laguna La Grande, as it was deemed impossible to reach the 

 Nahuel Huapi hatchery with any alive. 



The third shipment was more successful, although far from satisfactory. 

 Early in January, 1905, one of our superintendents left New York with 300,000 

 brook trout [Salvelinus jontinalis) eggs, 224,000 lake trout {Cristivomer namay- 

 cusb), 100,000 quinnat salmon (Oncorliynclius ischawytscha) , 92,000 rainbow 

 trout {Salmo irideus) , and 30,000 landlocked salmon (Salmo salar sebago) , arriv- 

 ing in Buenos Aires February 4. On arrival in the city, the quinnat salmon 

 eggs were found to be practically all dead, while the larger portion of rainbows 

 were either dead or dying. The landlocked salmon, brook and lake trout were 

 in much better condition, the percentage of loss en route having been compara- 

 tively small. The greater portion of the live eggs were taken to the Nahuel 

 Huapi hatchery, where they were hatched with fair success. An attempt was 

 made, however, to hatch a few landlocked salmon, brook and lake trout eggs in 

 a temporary hatching plant erected at Alta Gracia, in the Province of Cordoba. 

 The water to be used was from a small mountain stream, it being hoped that the 

 weather would be sufficiently cold at this time — the latter part of March — to 

 reduce the water temperature here to about 55° F. Unfortunately, however, 

 the weather proved to be as warm as at any time during the entire summer, and 

 consequently the water temperature in this stream would rise to about 75° F. at 

 midday, although usually falling to about 60° F. each night. The hatching 

 plant had been located where there were two small springs whose waters came 

 out of the ground at 62!^° F. This water was to be given a trial in case the 

 water in the stream was higher, but water at 62 >< ° F. was found to be entirely too 

 warm for hatching and rearing eggs which had been in refrigerator cases at a 

 temperature of 35° to 38° F. for nearly eighty days. A few thousand fish of 

 each variety were hatched, but had to be planted soon after coming out. It has 

 been reported that some of the trout and landlocked salmon planted here have 

 been caught from time to time, but I have never been able to obtain a specimen 

 of either. 



The fourth shipment yielded even better results than the first. On Febru- 

 ary 10, 1906, I left New York, en route to Argentina via England, with 300,000 

 quinnat salmon (Oncorhynchus tschawytscha) eggs, 122,500 sockeye salmon 

 (Oncorhynchus nerka), 98,200 silver salmon (Oncorhynchus kisutch), 80,000 lake 

 trout (Cristivomer namaycush), 60,000 brook trout (Salvelinus fontinalis), 

 30,000 landlocked salmon (Salmo salar sebago), and 25,000 rainbow trout (Salmo 



