ii2 How to obtain it. 



fish dropping down to the screen may be coaxed up stream again 

 by judicious and careful feeding, and the screen may then be 

 removed for half an hour, so as to allow any that still remain there 

 to pass down into the nursery below. The fish often assemble in 

 crowds about the embankments and below the pipes, where there 

 is an under current as well as at the head and tail of each nursery 

 pond. Many of the fish will not remain long in the nurseries at 

 all, but never mind if they do not. During the short time they 

 have been there they will have received sufficient education to be 

 able to look after themselves. We know how they can take care 

 of number one in a natural stream, where they have enemies at 

 every turn. 



I have often watched multitudes of trout fry dropping down 

 our mountain streams in May or June, passing from pool to pool, 

 from shallow to shallow, now hiding behind a stone or a tuft of 

 water-moss, now passing on carefully but steadily, and feeling their 

 way, as it were, all along the course. This they truly do, and in a 

 much greater degree than may be supposed, for like the swallow 

 leaving us in autumn and returning to the same locality in spring, 

 many of these young trout return to the place of their birth. 

 There is an instinctive knowledge implanted in a fish, which man 

 in his civilized form does not possess, and the more we learn 

 about them the more we find there is yet to learn. 



Under proper conditions fry are excellent travellers, and, as 

 a rule, two thousand of them will go into the same amount of 

 water that would be occupied by about a hundred yearlings. 

 This, of course, materially affects the cost. Their safety during 

 transit in suitable carriers is almost an absolute certainty. There 

 are, of course, contingencies which may arise en route which are 

 sometimes distressing to the little fish, but these are found 

 practically to be of very rare occurrence. Passing through a 

 tunnel with the van windows open will fill it with foul air, some of 

 which is taken up by the water. Two or three late passengers 

 jumping into the van just as the train starts, and smoking there 

 during the whole of a long run, also makes a very trying dispensa- 

 tion for the fish. These occurrences formerly took place, but 

 now such large quantities of living fish are travelled over the 

 railway systems of this country, that their requirements are better 



