242 ANIMAL RESOURCES AND FISHERIES OF UNITED STATES. 



Step fisli-ways. 



Box or pool lisli-ways. 



26103. Model of fisb-way. Jas. D. Brewer, Muucy, Pa. Patented by Dauicl 

 Steele. 



Steps contrived by arrangement of rocks and bowlders. 



25701. Model of Dimcansoii fish Tvay. J. T. Rotlie. 



Inclined plane without steps. 



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



quehanna River, in 1866. Designed by James Worral. Scale, 

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



29284. Model of old Pennsjdvania fish-way. Built at Columbia, on the Sus- 



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

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



With partitions at right angles. 



29291. Model of rectangular retin-n fish-way. Scale, :J^ inch to the foot. C. 

 G. Atkins, Bucksiiort, Me. 



Brackett's patent fish- way. 



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



kins, Bucksport, Me. 

 26937. Model of the fish- way at Holyoke, Mass., on the Connecticut River. 



Scale, -1^ of an inch to the foot (s^). C. G. Atkins. 

 This fish-way is on the Brackett i)]an. A submerged piece of cob- 

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

 fish-w^ay. 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 obliqne partitions. 



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



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

 Bucksport, Me. 



29286. Model of Foster's fisli-way. Invented by H. H. Foster, E. ]\Iachias, 



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



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



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

 port, Me. 



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



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

 Me. 



29290. Model of Swazey &, Atkins's fish-way. Invented by Alfred Swazey 



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

 foot. C. G. Atlvins, Bucksport, Me. 



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



26939. No. 15. Model of the fish-way at Lawrence, Mass., on the Merrimack 

 River. Scale, i inch to the foot (j/g). C. G. Atkins. 



