xxir 



REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Brook. The eggs commenced to liatcli the beginning of the following 

 April and concluded April 22. The development and hatching of the 

 eggs were carried on at the new hatchery under considerable incon- 

 venience, owing to the lack of its permanent interior tittings, as also 

 to the i^resence in the water su])ply of fine clay sediment from the new 

 reservoir ponds. All were safely carried through the winter, however, 

 and hatched without unusual loss. 



In January, 1892, 50,000 eggs each of the Loch Leven and Von Behr 

 trouts were received from the Northville Station in good condition and 

 placed in troughs. These finished hatching on April 7. On the 2Sth 

 of May an unusual mortality occurred among them. The loss had been 

 large for two weeks, and was first sujDposed to be due to the fact tliat 

 the fry (of the Von Behr trout) were weak and puny. The landlocked 

 salmon, however, which were an unusually fine and vigorous lot and 

 ate well, suffered in like manner, and the cause was therefore ascribed 

 to the high temperature of the water — 68° and 69° F. — and also to its 

 passage through a closed flume which i^revented its sufficient aeration. 

 The fish on hand at the close of the year were estimated to be — land- 

 locked salmon, 60,000; Loch Leven trout, 16,000; Von Behr trout, 10,000; 

 landlocked salmon hatched April, 1891, 3,800. 



Gloucester Station, Massachusetts (A. C. Adams, Mastek, Schooner Grampus, 

 IN charge). 



Preparation for the season's work was begun October 5, 1891, in the 

 commencement of the repairs and overhauling of the machinery and 

 other equipment of the station. Active fish-cultural work was started 

 December 1, on which date 876,600 cod eggs and 1,649,400 pollock eggs 

 were secured. The taking of cod spawn continued till March 30, and 

 of pollock till December 21. The total number of eggs in good condi- 

 tion received at the station during the season was about 57,075,000, of 

 which 51,600,000 were cod and 5^,475,200 pollock. Of the cod eggs, over 

 46,000,000 were taken in Ipswich Bay, landed at Kittery Point, Me., and 

 thence transferred in sealed jars by rail to the station; the balance of 

 the cod eggs, as also those of the pollock, were obtained off Gloucester. 

 The following tables exhibit the details of the season's propagation 

 and distribution : 



Cod. 



Number of 

 eggs taken. 



3,971, 

 ],]45. 

 UGj, 

 1,132, 

 1, 109, 



82?! 

 350, 



Loss during \ Ifiimber of 

 iucubation. fish batched. 



Number 

 of fish 



1,678. 

 C34, 

 93, 

 126, 

 126, 

 160, 



538. 

 293, 

 511, 

 572, 

 1, 005, 



1801. 



Dec. 18 



10 Dec. 18 



12 I Dec. 21 



9 1 Dec. 24 



6 Dec. 20 



... Dec. 28 



3 Dec. 31 



...1 Dec. 31 



3 Dec. 31 



Oft' mouth of harbor. 



Do. 



Do. 

 Off Eastern Point. 

 Off mouth of harbor. 



Do. 



Do. 



Do. 



Do. 



