964 BULLETIN OF THE BUREAU OF FISHERIES. 



he was given 20,000 Atlantic salmon eggs which were secured from the Earl of 

 Denbigh's fisheries in North Wales. Mr. Brophy arrived with the eggs at the 

 hatchery in Santa Cruz on March i . The loss from the time of leaving South- 

 ampton until the eggs were unpacked at the hatchery was as follows : Quinnat 

 salmon, a little over three-fourths of i per cent; sockeye salmon, a little over 

 ii\ per cent; silver salmon, a little less than nine-tenths of i per cent; lake 

 trout, something over three-fifths of i per cent; brook trout, somewhat over 

 two-fifths of I per cent; landlocked salmon, a trifle over i}4 per cent; rainbows 

 (youngest packed without moss) about 30I per cent ; rainbows (youngest packed 

 in moss) , a little less than 64 per cent ; rainbows (oldest packed without moss) , 

 5 J per cent; rainbows (oldest packed in moss), a trifle over 6| per cent; and 

 Atlantic salmon 100 per cent. The total loss of the Atlantic salmon was due to 

 imperfect packing, which was not discovered until after the eggs were all injured. 



While the eggs that reached the hatchery alive appeared to be good, they 

 were not as strong as a similar lot brought out for this hatchery from the United 

 States and England two years previously, as will be seen by a comparison of 

 the records. The death rate from the time the eggs were put into the hatching 

 trays until they had finished hatching was in most cases rather high, as was 

 also the death rate of fry during the month of March. The losses of eggs during 

 the hatching period were as follows: Quinnat salmon, -9 per cent; blueback 

 (sockeye), 30 -f- per cent; silver salmon, —14 per cent; landlocked salmon, 

 4-f per cent; brook trout, 34 -f per cent; lake trout, 17-f per cent; and rain- 

 bow trout, —44 per cent. The losses of alevins during the month of March was 

 as follows: Quinnat salmon, 5 -f per cent; sockeye salmon —9 per cent; silver 

 salmon i8-f per cent; landlocked salmon —63 per cent; brook trout, 10 -|- 

 per cent; lake trout, —27 per cent; and rainbow trout, 100 per cent. 



The lake trout from this hatchery and also the landlocked and sockeye 

 salmon are planted in Lago Argentine and other bodies of water near by. The 

 other salmon are usually planted in the Rio Santa Cruz and tributaries and 

 Rio Gallegos and tributaries. The brook trout are planted in tributaries to 

 the rivers mentioned, also in the tributaries of Lago Argentine and Lago San 

 Martin. The rainbows (first lot of eggs) were planted in tributaries to the Rio 

 Santa Cruz. Lago Argentine is supplied by several small rivers and streams 

 which rise in the Andes Mountains, where there is ice and snow the entire year. 

 The Rio Santa Cruz rises in Lago Argentine, which itself is situated in the 

 Andes Mountains at an elevation of 2,500 to 3,000 feet above sea level, and is 

 very deep. This lake has not yet been accurately surveyed, but is supposed 

 to be 25 to 30 miles long at its greatest length and from 6 to 8 miles wide. 

 It is in the Territory of Santa Cruz, which is the most southerly but one of 

 Argentina. 



