INDUSTRIAL PROGRESS DURING THE YEAR 1873. cxvii 



locked salmon on Sebec Lake, in Maine, in which the Commis- 

 sioners of Massachusetts and Connecticut have united with 

 the United States Commissioner. It is hoped that, when this 

 is fairly in operation, a large supply of this most valuable 

 food fish will be secured. 



Operations looking toward the multiplication of shad in 

 American waters, both on the part of the United States and 

 of some of the states themselves, have also been conducted 

 on a large scale. The work Avas prosecuted by the United 

 States on many of the coast streams from the Savannali 

 River to the Penobscot, and large numbers of young fish 

 were not only turned into the water at the points where they 

 were hatched, but transferred to tributaries of the Mississippi 

 and of the great lakes. A successful shipment was also made 

 to the Sacramento River of 35,000, and a small number to the 

 Jordan, a tributary of Great Salt Lake. 



As in previous years, Massachusetts, Connecticut, and 'New 

 York carried on similar operations for the benefit of the local 

 waters, while a beginning was made in the same direction 

 by the Commissioner^ of Pennsylvania in the Susquehanna 

 River. 



The cultivation of whitefish has also been prosecuted with 

 great zeal, particularly by the States of Michigan and New 

 York, while a considerable number belonging to the United 

 States Commission was sent to the Commissioners of Cali- 

 fornia, and by them successfully planted in the waters of 

 Clear Lake. 



The operations in connection with whitefish have of late 

 years been prosecuted on a very large scale by the State of 

 New York, under the direction of Mr. Seth Green. Li 1872 the 

 state hatching-house at Caledonia contained about 3,000,000,. 

 which were duly planted when hatched. The number was 

 less in ISYS. In 1872 the United States Commission engaged 

 the services of Mr. IST. W. Clark, in connection with the white- 

 fish eggs, and transmitted about 400,000 to the State Com- 

 missioner in California. In 1873 the State of Michigan col- 

 lected a larg;e number of these esfocs for introduction into its 

 own and adjacent waters. This fish, as is well known, is the 

 most important of any species taken in the lakes, and it is 

 fortunate that the method of their artificial propagation 

 proves successful, and promises so satisfactory results. Only 



