[21 J ARTIFICIAL FEEDING OF CARP. 1029 



to 700, and iu tbe fourth from 900 to 1,000, I think (at least my expe- 

 rience teaches me this) that one would go too far. In spite of this, how- 

 ever, we have very distinctly divided classes of lish before us, which at 

 once 'suggest a six years' period. 



If a four years' period is aimed at, with a tinal weight of 1,'_'50 grams, 

 the weights — all other conditions being the same — will be as follows: 

 274 grams at the end of the first year of growth, 040 at the end of the 

 second, and 1,250 at the end of the last year. 



As it can hardly be expected that those carp which do not have the 

 minimum weight of COO grams will in the sale-pond reach the final 

 weight in a single year, all fish having less than GOO grams nnist, iu 

 the four years' period, be placed in the growing-ponds. Tbe stock on 

 hand for the sale-ponds is only 12,514 fish, whilst it should be 12,700. 



In the growing-ponds of Class II no carp should be placed which do 

 not weigh at least 0.250 kilogram a jjiece. Of those weighing from 

 0.240 to 0.467 kilogram there are on hand 9,541 which will certainly 

 reach a minimum weight of O.COO kilogram for the next year's stock for 

 the sale-ponds. The number aimed at is 12,700. In order to reach this 

 number we must, therefore, endeavor to bring 3,159 of the lighter carp 

 up to 0.G40, or at least 0.000, kilogram, which will not be very difficult 

 to accomplish. 



In order to raise the stock of the sale-ponds to the required number, 

 12,700, it will be necessary, as has already been stated, to raise the 

 n-quired number of carp weighing 0.407 kilogram by artificial feeding 

 to the final weight. There will then still be 3,358 fish, varying in weight 

 from 0.43 to 0.181 kilogram. The best plan will be to sell them ; un- 

 fortunately there will not be many customers for such light weights. 

 In the case before us a very large number, however, may be used to 

 supply voids iu some of the ponds. If there are ponds at some distance, 

 or if a summer-course has been included in the system, these extra fish 

 can, in some outside ponds, by feeding, be raised to the weight of the 

 other fish. It would not do to place them in the growing-ponds, as 

 fish placed in these ponds should have the same normal weight as the 

 stock of such ponds. 



If one has no i^onds of one kind or the other at one's disposal, all 

 that can be done is to overstock a suitable area of the growing-ponds 

 of Class I and Class II, in order to obtain ponds for raising these extra 

 fish, and to neutralize this overstocking by artificial feeding. If the 

 transition from one period to the other is to be huriied it will be 

 better not to use any artificial food at all than to feed artificially in 

 the wrong place. In the case in question several thousand joung fry 

 have, by feeding, in one year been raised to a weight of 0.500 kilogram, 

 and the feeding of the heavier fish has been omitted in order to enter 

 the new period as soon as possible. Thereby the perfecting of the 

 transition is considerably delayed. 



If, instead of aiming at 0.500 kilogram, the feeding had only aimed 



