242 ANIMAL RESOURCES AND FISHERIES OF UNITED STATES. 



Fish-ways. 



Step fish-ways. 



Box or pool fish-ways. 



25108. Model of fish-way. Jas. D. Brewer, Mnucy, Pa. Patented by Daniel 



Steck. 



I Steps contrived by arrangement of rocks and bowlders. 



25701. Model of Duucanson fish way. J. T. Rotlie. 



Inclined plane without steps. 



29283. Model of old Pennsylvania fish-way. Built at Columbia, on. the Sus- 



qiiehanna River, in 1866. Designed by James \Vorral. Scale, 

 inch to the foot. C. G. Atkins, Bucksport, Me. 



29284. Model of old Pennsylvania fish-way. Built at Columbia, ontheSus- 



quehaniia River, in 1873. Designed by James Worral. Scale, 

 I inch to the foot. C. G. Atkins, Bucksport, Me. 



With partitions at right angles. 



9491. Model of rectangular return fish-way. Scale, inch to the foot. C. 

 G. Atkins, Bucksport, Me. 



Brackett's patent fish-way. 



29285. Brackett's patent fish-way. Scale, i inch to the foot. C. G. At- 



kins, Bucksport, Me. 

 ^3037. Model of the fish-way at Holyoke, Mass., on the Connecticut River. 



Scale, i of an inch to the foot (^). C. G. Atkins. 

 This fish-way is on the Brackett plan. A submerged piece of cob- 

 work surmounted by a grating serves to turn the fish into the 

 fish- way. It carries a column of water 2 feet wide and 2 feet 

 deep which reaches the bottom with no perceptible increase in 

 velocity, the current being less than 2 miles an hour. Height 

 of the dam, 30 feet; length of the fish-way, 440 feet; the in- 

 cline, 1 in 15. 



With oblique partitions. 



29287. An adaptation of Foster's fish-way. Designed by C. G. Atkins, and 



built at Pembroke, Me. Scale, inch to the foot. C. G. Atkins, 

 Bucksport, Me. 



'<:9286. Model of Foster's fish-way. Invented by H. H. Foster, E. Marinas, 

 Me. Scale, i inch to the foot. C. G. Atkins, Bucksport, Me. 



29288. Model of oblique fish-way. Invented by Alfred Swazey, Bucksport, 



Me., in 1876. Scale, i inch to the foot. C. G. Atkins, Bucks- 

 port, Me. 



29289. Swazey's oblique fish-way. Invented by Alfred Swazey, Bucksport, 



Me., in 1874. Scale, J inch to the foot, C. G. Atkins, Bucksport, 

 Me. 



29290. Model of Swazey & Atkins's fish-way. Invented by Alfred Swa/ey 



and C. G. Atkins, Bucksport, Me., in 1874. Scale, inch to the 

 foot. C. G. Atkins, Bucksport, Me. 



. Model of the McDonald fish-way. M. McDonald, Lexington, Va. 



20939. No. 15. Model of the fish-way at Lawrence, Mass., on the Merrimack 

 River Scale, \ inch to the loot ,. C. G. Atkins. 



