GEOGRAPHICAL DISTRIBUTION. 157 



their own accord through the canals connecting Lake Erie 

 with the Hudson, into that stream. 



" Private citizens of Pennsylvania introduced the Black 

 Bass (Micropterus salmoides) into the Susquehanna about 

 1869, at Harrisburg. In 1873 the tributaries of the Sus- 

 quehanna, the Potomac, and Delaware Rivers were sup- 

 plied with Black Bass by the Commissioners at thirty-five 

 different points. 



" In the year 1854, Mr. William Sh river, of Wheeling, 

 Virginia, planted in the canal basin at Cumberland, Mary- 

 land, his former home, a number of the Black Bass (Mi- 

 cropterus salmoides) ; from the basin they escaped into the 

 Potomac River, where they have increased immensely at 

 the present day. They were moved from the waters of 

 the Ohio River to their new locality in the tank of a loco- 

 motive. Numerous cases have also occurred of transfer 

 from one locality in the Southern States to another. 



" There have been very many transfers of these valuable 

 species that have not been recorded, as they are easily kept 

 alive while being moved from one place to another, and 

 propagate surely and rapidly in ponds, lakes, and rivers. 



" These details are given because they show the facility 

 with which comparatively barren waters may be stocked 

 to a considerable extent with good food-fishes, and they 

 exhibit the general interest and attention that have been 

 given to this mode of propagation." 



In the account above given, reference is made to the 

 stocking of the Potomac River with Black Bass by Gen- 

 eral W. W. Shriver, of Wheeling, West Virginia. As 

 this matter is often alluded to on account of the marvelous 

 increase of the fish from so small a beginning less than 

 thirty Bass having been originally transplanted and as 



