lOlG REPOliT OF COMMISSlOxNEK OF FISH AND FISHEKIES. [8] 



llesli, therefore, cost 0.CG4 x 40, wbicb is '2G.5C pfennigs [about cents]. 

 Ill tbe niailcct it would briu}^ at least 100 jjfeuuigs [25 cents], and in 

 former times it woubl bave brouybt at least 120 i)fennigs [30 cents]. 



Let us niAv take a second mixture. Su])pose tbat we feed to oOO kilo 

 grains of cari) per day, 4.807 kilograms of fisb-tlour and 1.41 1 kilograms 

 of wbeat tlour of tbe second quality. Tliis contains 2.174 kilogianisof 

 albumen and J. 247 kilograms of hydrates of carbon, inclusive of fat ; 

 this latter substance redaccd to the value of resj^iration [Respirations- 

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

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

 its prei)aration, which simply consists in adding water, making a tough 

 paste, and trying it, would be as follows : 



Cent. 



4.807 kilograms of iish-llonr at, '.'0 pfeunig.s [7| ccnt.s] 'Mi 



1.454 kilograms n\ heat-flour at 44 pleuuigs [11 cents] Itj 



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

 it, therefore, costs 96 pfennigs [24 cents]. If this produces 2.2 kilo- 

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

 the price 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 desh, the cost 

 of the kilogram would be 50.8 pfennigs [14 cents], and the net gain 

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

 cents]. 



A third mixture of food is as follows: 2.800 kilograms of meat Hour 

 and 1.451 of Avheat-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 the above mentioned 

 prices, would cost 72 pfennigs [18 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 

 kilograms of fresh blood, containing 1.971 kilograms of albumen and 

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

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

 bran at 20 [)fennigs [5 cents] and a kilogram of blood at 5 i)fennigs, this 

 food coasts, 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 i)fennigs [20 cents]. 



Kesi)ecting this mixture, it may be mentioned that in the old Oeslcr- 

 reichischUfigarische Fischerei-Zcitung 1880, p. 139, it is stated that, dur- 

 ing seven summer months an increase of 1.5 kilograms per fish was ob- 



