1016 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [8] 



flesli, llicrefore, cost 0.CG4 x 40, Avbicb is 26.50 pfennigs [about G cents]. 

 In the n)arket it would biing at least JOO pfennigs [25 cents], and in 

 former times it would Lave brought at least 120 pfennigs [30 cents]. 



Let us now take a second mixture. Su])pose that we feed to 500 kilo 

 grams of carp per day, 4.b07 kilograms of tish-fiour and 1.411 kilograms 

 of wheat flour of the second quality. This contains 2.174 kilogiamsof 

 albumen and 1.247 kilograms of hydrates of carbon, inclusive of fat; 

 this latter substance reduced to the value of resjjiration [Respirations- 

 werth). We now get 1:0.50 as the proportion of nutritive substances, 

 which agrees with my standard. The cost of this mixture, including 

 its preparation, which simply consists in adding water, making a tough 

 paste, and trying it, would be as follows : 



Cent. 



4.807 kilograms of fish-llotir at 30 pfennigs [7^ cents] 'M 



1.454 kilogiauis \\ heat-flour at 44 pleunigs [11 cents] IG 



52 



One kilogram of albumen, with the hydrates of carbon belonging to 

 it, therefore, costs 90 pfennigs [24 cents]. If this produces 2.2 kilo- 

 grams of carp flesh [at 43 pfennigs per kilogram] we get, supposing 

 the i)rice of carp to be 100 pfennigs [28 cents] per kilogram, a net gain 

 of 57 pfennigs [14 cents] per kilogram of increase. 



If we wore to base this calculation on the result given in my manual, 

 which is that 1 kilogram of albumen, with the corres[)onding quantity 

 of hydrates of carbon, produces 1.428 kilograms of carp flesh, the cost 

 of the kilogram would be 5().8 pfennigs [14 cents], and the net gain 

 per kilogram of increase would, therefore, be 31.2 pfeunigen [about 8 

 cents]. 



A third mixture of food is as follows: 2.890 kilograms of meat flour 

 and 1.451 of wheat-flour, containing' 2.174 kilograms of albumen and 

 1.341 of hydrates of carbon, inclusive of fat, with a proportion 1: 0.7 of 

 nutritive substances; the kilogram of albumen, at tbe above mentioned 

 prices, would cost 72 pfennigs [IS cents] ; the net gain per kilogram 

 of carp flesh produced by food would, therefore, be 07.3 pfennigs [17 

 cents]. The proportion of nutritive substances is somewhat larger than 

 in my standard, but may still be considered suitable. 



A fourth mixture is as follows: 2 kilograms of wheat bran, and 9 

 kilograms of fresh blood, containing 1.971 kilograms of albumen and 

 1.012 kilograms of hydrate of carbon, inclusive of fat; the proportion of 

 nutritive substances is therefore 1 : 0.594. Counting a kilogram of wheat 

 bran at 20 pfennigs [5 cents] and a kilogram of blood at 5 jjlennigs, this 

 food costs, in round numbers, 85 pfennigs [21 cents], and the kilogram 

 of albumen, in round numbers, 43 pfennigs [about 11 cents]; the net 

 gain per kilogram of increase is therefore 80 pfennigs [20 cents]. 



Respecting this mixture, it may be mentioned that in the old Oester- 

 reiehisch Ungarische FischereiZeitung 1880, p. 139, it is stated that, dur- 

 ing seven aupi.ipermqptlis 9111, increasie^f 1.5 kilograms per fish was ob- 



