242 ANIMAL RESOURCES AND FISHERIES OF UNITED STATES. 



Fish-ways. 



Step fish-ways. 



Box or x)ool fish-ways. 



iJUlOS. Model of fish-way. Jas. D. Brewer, Muucy, Pa. Patented by Dauiel 

 Steck. 



Steps contrived by arrangement of rocks and bowlders. 



25701. Model of Dniieanson fish way. J. T. Rothe. 



Inclined plane Avithout steps. 



292S3. Model of old Peuusylvauia fish-way. Builtat Coliimhia, on the Sns- 

 (|uehanna River, in 1866. Designed by James Worral. Scale, 

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



29284. Model of old Pennsylvania fish-way. Bnilt at Columbia, onthoSns- 

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

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



With j)artitions at right angles. 



C9291. Model of rectangular return fish-way. Scale, :J- inch to the foot. C. 

 G. Atkins, Bucksport, Me. 



Brackett's patent fish-way. 



29265. Brackett's patent fish-way. Scale, ^ inch to the foot. C. G. At- 

 kins, Bucksport, Me. 

 3GD37. Model of the fish- way at Holyoke, Mass., on the Couuectiout Riyer. 

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

 This fivsh-way is on the Brackett plan. A submerged jiiece of col>- 

 work surmounted by a grating serves to turn the fisli intu 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 1.5. 



With oblique 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. 

 i'9286. Model of Foster's fish-way. Invented by H. H. Foster, E. Machias, 

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



29288. Model of oblique fish-A^ay. Invented by Alfred Swazey, Bucksport, 

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

 port, Me. 



29289. Swazey's obli(iue fisll-^^■ay. Invented by Alfred Swazey, Bucks])ort, 



Me., in 1H74. Scale, ^ 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, J inch to the 

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



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



2G939. No. 15. Model of the fish-way at Lawrence, Mass., on the Merrimack 

 River Scale, ^ inch to the foot (<nj). C. G. Atkius. 



