OH Stocking. 53 



the weather the less ice can be used without injury 

 to the trout, as it is of importance that the sum 

 total of the difference, of the temperatures of the 

 ponds, the water in the carrying tanks, and of 

 the water of their new home, should be as small 

 as possible. 



The average weight of water allowed for two- 

 year-olds is 2 tons 10 cwt. per thousand, and the 

 cost of carriage including return empties is 

 about 6 per ton for any distance over 200 

 miles, or 15 per thousand, making 40 per 

 thousand, delivered at purchaser's risk, or under 

 lOd. per fish. For shorter journeys, or in very 

 cold weather, the cost of carriage is less, in some 

 cases much less. But even at the higher rate 

 good two-year-olds are a most profitable invest- 

 ment. 



THE CONDITIONS UNDER WHICH OVA, FRY, 

 YEARLINGS, AND TWO-YEAR-OLDS, CAN BE MOST 

 PROFITABLY USED. These conditions are practi- 

 cally a repetition of what has been written under 

 appropriate uses of Ova, Fry, Yearlings, and Two- 

 Year-Olds, but it will be convenient to consider 

 them under one head, more especially as there are 

 circumstances under which all four modes of 

 stocking can with advantage be used together ; for 

 instance, Highland lochs, especially those situated 

 not far above the sea level, generally have long 



