FISH-CULTURE. 249 



the others, being over 5 oz., I put them into the dam in case they 

 had taken on cannibal habits. 



On 2d October, 2021 S. levenensis yearlings (hatched 1876) 

 were shifted from the upper 100-feet at Craigend to the east 

 130-feet at Howietoun ; and on the third the rest of the S. leven- 

 ensis from the upper 100-feet were brought over to Howietoun 

 and added to those in the east 130-feet, making a total of 2802. 

 The two 100-feets were then run dry, and 13 burn-trout were 

 found to have been left in the lower pond. They were transferred 

 to the 60-feet, making the total in that pond 1891 S.fario. 



The lower 100-feet at Craigend had 2315 S.fario in it in the 

 previous December, so, allowing for the few placed in the dam, the 

 loss had been 320, or 13'39 per cent. The loss from the upper 100- 

 feet is not stated in the notes. I find that over 5000 S. levenensis 

 (hatched 1876) were placed in the east 130-feet pond; and as only 

 2000 were in the 20-feets in December 1876, it is evident that 

 some must have been transferred from the upper 100-feet previous 

 to the 1st October 1877 ; and that, as the whole stock of S. leven- 

 ensis (hatched 1876) being only 7000 in December, the loss must 

 have been under 2000, or less than 20 per cent. This is a very 

 heavy percentage, and is probably 8 per cent, too high, as I find 

 5000 alive on the 31st December 1878, or fourteen months after- 

 wards. The most of the loss would be among the fish in the two 

 20-feets, as these ponds, however well suited to fry, are too 

 cramped for yearlings. 



New zinc was put on the screens of the earth ponds on the 

 19th November, and one was filled, and stocked with S. levenensis 

 springlings (hatched 1877). These had strained the capacity of 

 the Fishery very much, as only the west 20-feet, which had been 

 used as a filter to the Howietoun hatching-house the previous 

 winter, had been available for fry, and all the rearing-boxes and 

 hatching-boxes had had to be pressed into service for an unwonted 

 time. But in spite of all difficulties, about 8000 were reared, the 

 lower 20-feet, where the 1000 hybrids had been, being also used 

 in spring for fry. 



This was the first season ova was obtained from fish reared from 



