288 Fortieth Annual Meeting 



starvation will overtake them. Mr. Atkins' experiments 

 in holding young salmon unfed seem to indicate this. Pike- 

 perch fry, however, are active from the time they are 

 hatched, and it may well be that their travels should begin 

 at once. Even though each does no more than place a good 

 distance between himself and the rest of his family, it will 

 evidently have been a good move. 



To plant thousands of young fish in such a situation 

 that one able-bodied enemy can keep them rounded up till 

 he can make away with them, or they starve, can hardly 

 be the right way. Probabl)^ all young fish should be planted 

 in shallow water rather than deep, since the minute life, of 

 which their food must consist, is supposed to be more 

 abundant in shallow water. 



The season at which young fish should be produced must 

 also correspond with the season at which their food is pro- 

 duced. To force the development of the eggs and liberate 

 young fish at an unseasonable time can be of little use in 

 fact however well it may read in a record. Where the 

 temperature of water in which eggs are incubated is not 

 changed artificially from that in which the young fish are to 

 be liberated, it is likely that the development of eggs and 

 young fish will keep pace with the development of those 

 creatures, which are to be their food, but any interference 

 with this scheme of things is liable to prove risky. 



In this connection it may be suggested that transfers from 

 one climate to another should be made in the tgg and at the 

 earliest practicable moment, since change in the rate of 

 development of the embryo is believed less harmful in the 

 early stages. Where there is to be a considerable change of 

 climate or of water temperature, further experiments with 

 shipment of green eggs might lead to useful results. 



But rather than wander further, let us take one more look 

 at the starting point and be done. Whenever you think 

 you have a new idea pass it along. It may be new to some- 

 body else, or at worst you may be able to exchange it for a 

 better one. 



