72 On Stocking'. 



150,000 eggs. The principal mortality being in the first 

 month after commencing feeding. 



COST OF STOCKING YEARLINGS. 



Yearlings (in this particular case) would cost about 

 11 per 1000 delivered. This, for an annual stocking of 

 20,000 yearlings would entail an expenditure of 220. 



COST OF STOCKING TWO-YEAR-OLDS. 



Two-year-olds would (in this particular case) cost 

 delivered, something under 30 per thousand, which for 

 15,000 two-year-olds would entail about 450 per annum. 



COST OF STOCKING BY MEANS OF REARING PONDS. 



I have no doubt that this is the proper course to adopt, 

 and may be considered under three sub-heads, viz. : (a) 

 Cost of construction ; (b) Cost of fry; (c) Cost of manage- 

 ment, food, risk, etc. 



(a) COST OF CONSTRUCTION. 



The ponds for rearing yearlings require to be about 

 100 feet long, 22 to 25 feet wide, and must be G feet in 

 the centre, with an iron drain-pipe and wooden valve to 

 draw off the pond which must be dry for at least three 

 weeks every year. The quantity of water required is one 

 6-inch pipe with a pressure of three diameters or 18 inches. 

 Experience has shown that the inlets and outlets should 

 be built, and that brick- work is preferable to masonry. 

 The cost of each pond is about 120, exclusive of water 

 supply and water course. The capacity of each pond is 

 from 8000 to 10,000 good yearlings and about 2000 small 

 yearlings annually. 



(&) COST OF FRY. 



The equivalent in fry is difficult to calculate, as so 

 much depends on the occidentation of the pond, the 

 quality of the water, and the skill of the attendant. At 



