418 U. S. BUREAU OF FISHERIES 



for tlie capture of a brood stock of landlocked salmon. The fish thus 

 secured were of a considerably larger size than those similarl}^ taken 

 in previous j'-ears. The 280,000 eggs obtained from them produced 

 258,200 advanced fry for distribution. In pursuance of a recently 

 adopted policv all of these fry were returned to Green Lake waters. 



Between I^farch 25 and April 18 smelt eggs numbering 18,000,000 

 were secured from adult fish taken in the traps installed in Great 

 Brook. The season proved one of the most successful ever experi- 

 enced at this point in smelt propagation, both as regards the num- 

 ber of eggs handled and their quality. 



Every year there are two distinct runs of spawning smelt in streams 

 tributary to Green Lake, the principal distinguishing feature between 

 them being the size. The fish are locally known as large smelt and 

 small smelt. Fish-cultural work in 1924 was concerned with the 

 larger variety, the spawning season of which occurs in March and 

 April, the actual time varying somewhat yvith. climatic conditions. 

 When the run of the smaller variet}' occurred several weeks later 

 Great Brook was at flood stage and the water carried so much silt and 

 drift that the efforts to collect e^gs were fruitless. 



Grand Lake Stream (Me.) substation. — The results of the land- 

 locked salmon work at this point were more successful than for a 

 number of years past. During the period extending from October 22 

 to November 20, 844,000 eggs were taken, this number representing- 

 the spawning of 444 female and 557 male fish, which w^ere taken in 

 traps set in Grand Lake Stream. These adult fish ran considerably 

 larger than usual, their average weight being 4 pounds. Tbe work 

 at Dobsis Lake resulted in the taking of 140,000 eggs from the 96 

 female fish captured. Both lots of eggs of this species were of 

 excellent cjuality and from them a good percentage of fry was pro- 

 duced. Fully 75 per cent of the eggs were developed at the Grand 

 Lake Stream hatchery for replenishing local waters. The remainder^ 

 some 212,000, were shipped in the eyed stage to the Craig Brook 

 station to meet the distribution requirements in that field. 



A peculiarit}" of the landlocked salmon eggs taken at this substation 

 is the invariably larger size of the eggs secured from Dobsis Lake as 

 compared with those from Grand Lake or Grand Lake Stream, 

 though there is no noticeable difference in the size or vigor of the 

 resulting fry. Of interest also, as a basis of conjecture, is the un- 

 usually large number and size of the adult salmon taken in the bureau's 

 traps at Grand Lake Stream durmg the fall of 192.3. 



The year's work at the Grand Lake Stream substation included 

 the successful incubation of 50,000 eggs of the brook trout acquired 

 by purchase and the distribution of the product in local waters. 



ST. JOHNSBURY (VT.) STATION AND SUBSTATIONS 



[A. n. DiNSMORE, Superintendent] 



The work in this field included that at the main station at St. 

 Johnsbury and at its two substations, one at Holden, Vt., and the 

 other at York Pond, N. H., located in the White Mountain National 

 Forest. During the year the substation at Swanton, Vt., was trans- 

 ferred to the jurisdiction of the Cape Vincent (N. Y.) station, this 

 action seeming appropriate since the work at Swanton is identical in 

 character with the main line of endeavor at Cape Vincent. As in 



