198 American Fisheries Society. 



plantings, to guard against frost during low water, the nests 

 are placed as near as possible to the foot or head of riffles 

 which give a more rapid circulation of water. In this kind 

 of planting, the box is set deeper in the gravel so that the top 

 of the nest is flush with the creek bed ; but in the spring when 

 danger of frost and freshets is past and incubation is more 

 rapid, the plantings are made shallower, only part of the 

 nest being below the level of the stream bed, and the rest in 

 a flat mound through which the water circulates freely. In 

 this as in every other phase of this work a thorough acquaint- 

 ance with local conditions is imperative. 



This method of distribution is not necessarily confined 

 to fish of purely commercial value. Last spring 200,000 

 Atlantic salmon eggs were distributed in this way, in 

 streams tributary to Great Central and Sproat Lake, on the 

 west coast of Vancouver Island, and plantings of cutthroat 

 and Kamloops trout eyed eggs were made at widely 

 separated points in many parts of the Province. The 

 majority of these places would have been impossible to reach 

 and stock with free-swimming fry or fingerlings. In almost 

 every case splendid results have been reported. 



To facilitate the planting of sporting fish eggs, the writer 

 is now perfecting a one man outfit. This consists of a small- 

 er box, a shovel after the fashion of an army entrenching 

 tool and a light box for the trays, which is nested inside the 

 planting box while being carried. The carrying can be done 

 by means of shoulder straps attached to the box. With this 

 equipment, one man can make an almost ideal distribution, 

 planting small lots of one hundred to five hundred eggs in 

 suitable places over a wide area. 



At one of the Canadian Government hatcheries at Cultus 

 Lake, experiments are being made in planting green eggs 

 directly after they are water-hardened. The results so far 

 obtained were as follows: 



On December 10th, 1922, two female cohoes were spawn- 

 ed in separate pans, the eggs fertilized and allowed to 

 stand for 40 minutes in water at a temperature of 34 deg.F. 

 These eggs were then planted by the Harrison Box method in 

 two streamlets at the hatchery. On February 28th of the 

 present year planting No. 1 was examined, and on March 

 27th an examination was made of planting No. 2 with the 

 following results : 



Of the 637 eggs shown as fertile in planting No. 2 six 

 eggs when being picked up had the appearance of being 

 alive, but were found on subsequent examination to be in- 

 fertile. It will be noted that these are not included in the 

 column headed "Bad Eggs." 



