On Stocking. 37 



being placed in any trough or box larger than can 

 be easily lifted by two men, and the fry poured 

 out into the pitchers or carrying tanks. In 

 practice, this entails a cost for house room so to 

 speak double of that for incubation of the eggs, 

 since, as compared with the number of eggs, only 

 half the number of fry can be safely and advanta- 

 geously fed in any given box. 



Thus the produce of a gallon of Ova costs 2, 4s. 

 for house rent, as compared with 1, 2s. per gallon 

 of Ova for the period of incubation thereof. Fry 

 further cost four times as much for labour, and 

 consume about 1 per gallon of food. 



The ledger account stands thus : For a house 

 capable of incubating 80 gallons of Ova and rearing 

 the produce of 40 gallons as fry for three month 

 after hatching, (See page 17). 



Interest on ^3000 at 4 per cent., . . . .120 



Depreciation and renewal calculated on 80 gallons 



of Ova as 14s. per gallon (see page 18), . . 56 



.176 

 Of which one-half is credited to use for Ova leaving 



to debit of Fry, . . . V ...."'. . .88 

 Add Wages at 80s. for 15 weeks, . ; 60 



Cost of rent and wages for rearing the produce 

 of 40 gallons of Ova for three months after 

 hatching, . . .148 



or, divided by 40 gallons, 3, 14s. per gallon 

 of Ova this, added to the 1, 9s. 6d., makes 



