130 PRACTICAL TROUT CULTURE. 



CHAPTER XL 



TRANSPORTATION OF SPAWN AND FISHES. 



WE now reach a point of the greatest import- 

 ance in regard to the pecuniary success of fish cul- 

 ture. In a previous chapter we have mentioned 

 that at present it is to his sales of impregnated 

 spawn and young fishes that the fish-farmer must 

 look for remuneration for his expenses in time, 

 labor, and invested capital. That he should be 

 enabled to transport these long distances with 

 ease and safety is a point of vital importance. 

 In our experience we have found that customers 

 are rarely willing to take upon themselves the 

 risks of transportation, and with few exceptions 

 the contract is made with the proviso that the 

 spawn or fishes shall be delivered in good condi- 

 tion. It has been stated by many foreign experi- 

 menters, that if kept at the temperature of 32 

 the progress of development of the embryo is ar- 

 rested though the vital principle is not destroyed, 

 and that upon the temperature being slowly and 

 carefully elevated to about 40 the incubation will 

 again proceed. Recent experiment, however, has 

 somewhat modified this theory, and the compara- 



