BULLETIN OF THE UNITED STATES FISH COMMISSION. 453 



nut in special charge of the hatchery keeps a daily account of loss in 

 eggs and fry during the whole season. The loss for the past season 

 amounted to -', per cent. The number of days in hatching has been 

 64, on the average, the lowest number being 59; water temperature, 45 

 degrees. The fry are kept till about 40 days old, and then are distrib- 

 uted in the river Tay and its tributaries. 



(5) Loch Leven hatchery. — The hatching house in connection 

 with the well-known Loch Leven fishery (Kinross-shire) was erected 

 in 1883 by the Loch Leven Angling Association, Limited, assisted by 

 the proprietor of the lake, Sir Graham Montgomery, Bart. The cost of 

 erection was £229 19s. 2d. [about $1,115]. It is situated about 800 yards 

 from the loch, beside a small stream. The water supply is got from a 

 spring, about 600 yards from the house. With a temperature about 44 

 degrees, the period of hatching is from 60 to 72 days. There are 12 boxes — 

 9 fitted up with glass grills, and 3 with Wilmot trays. Last season 

 about 180,000 eggs were laid down. The percentage of failure was ex- 

 ceedingly small. The fry were strong and healthy, and were distributed 

 in thespriug months in the several feeders of the loch. This season, 

 about 220,000 eggs have been laid down, under the superintendence of 

 Captain Hall, who intends putting the fry into the loch tributaries five 

 or six weeks after hatching. Prior to the erection of a special hatching 

 house for the loch, Lord Lauderdale has, at different times since 1874, 

 stocked it with Loch Leven fry and trout, bred at his own fishery. 



(6) Linlithgow Palace loch fishery. — This fishery was opened 

 in May, 1881. It belongs to Mr. A. G. Anderson, fish merchant, Edin- 

 burgh, who has leased the loch for angling purposes from the Crown. 

 A hatching house has been erected close by the loch on a small stream. 

 Two ponds are attached — one for adult trout, and the other for rearing 

 fry. A third and larger pond made of concrete is in course of construc- 

 tion, for stock purposes. The entire hatchery and ponds occupy about 2 

 acres. The hatching capacity is estimated at 600,000. For hatching, 

 glazed terra-cot ta troughs or tanks, and boxes covered with pitch, are 

 used. The former do not give the same amount of space as the latter, 

 in which are placed layers of perforated zinc trays — three or four to 

 each box — thus providing a holding capacity of from 16,000 to 20,000 

 per box. Over 200,000 ova are already laid down for the season ; but 

 a large number of trout have still to be stripped. Last month 300,000 

 young trout, all strong and healthy, and measuring from 3£ to oh, inches 

 in length, were put iuto the loch. Mr. Anderson finds the eggs hatch 

 out in about 62 days, at a tempera tun* of about 45 degrees. Last sea- 

 son the loss iu hatching was about 3 per cent. So successful has Mr. 

 Anderson's hatchery been that he has erected another house — made of 

 wood (50 feet long and 7 broad), covered with felt — with an estimated 

 hatching capacity of 300,000. Young salmon hatched from the ova, 

 taken from a dead fish killed by the salmon disease, have thrived 

 remarkably well. There is also a tank of ova in the hatchery taken 



