FISHERIES OF THE MIDDLE ATLANTIC STATES. 



61 



Statement, by Counties, of the Yield op the Dip-net Fisheries op Pennsyl- 

 vania in 1904. 



Statement, by Counties, of the Yield of the Line Fisheries op Pennsylvania 



in 1904. 



Statement, by Counties, of the Yield of the Fish-basket Fisheries of Penn- 

 sylvania in 1904. 



NOTES AND DETAILED STATISTICS OF PRINCIPAL FISHERIES. 



The oyster fishery, which is credited to Philadelphia County, is 

 prosecuted in Delaware Bay by boats owned in Philadelphia. 



The recent decrease in the catch of fish in the Delaware and Sus- 

 quehanna rivers is attributable to excessive fishing in the lower 

 stretches of the rivers and about their mouths, and in some degree 

 to pollution of the waters with acids, dyestuffs, and other factory 

 refuse. 



The following supplementary table shows the number and value of 

 shad caught in each county on these two rivers in 1904: 



Counties. 



Bucks 



Dauphin 



Delaware 



Juniata 



Lancaster. . . . 

 Northampton 



Counties. 



Perry 



Philadelphia 



Pike 



York 



Total. 



No. 



6,050 

 L2.350 



1,600 

 41,1,50 



188, 571 



Value. 



$2, 420 

 3,115 



500 

 9,180 



52, 472 



