212 FISHERIES OF THE UNITED STATES. 



27. — Maryland Hatcbing Station at Baltimore. 



28. — Virginia Hatching Station, liead of Rappahannock River. Alosa sapidisaima. 



29. — Virginia Hatching Station at Berkeley. 



30. — North Carolina Hatching Station at Morganton. 



31. — Ohio Hatching Station at Toledo. Corefjonus albm, etc. 



32. — Michigan Hatching Station at Niles. 



33. — Michigan Hatching Station at Detroit. Corcgonus albus. 



34. — Wisconsin Hatching Station at Milwankee. Corcyonus albus. 



35. — AVisconsin Hatching Station at Madison. 



36. — Iowa Hatching Station at iVnamosa. 



37.— Utah Hatching Station at Salt Lake. 



II. PROTECTION. 



1. Gajvie laws. (See reports.) 



2. Fish-ways. 



GEOOVB FISH- WAYS. 



15355. Model of tish-way. James D. Brewer, inventor, Muncy, Lycoming 

 Connty, Pa. In this fish-way the water runs in a zigzag groove 

 which breaks its force without the formation of eddies. Patented. 



26106. Smaller model of the above. 



BOX, STEP, OR POOL FISH- WAYS. 



26107. Model of fish-way. James D. Brewer, Muncy, Pa. Patented by 



Daniel Steck. In this the water is retarded in its desent by means 

 of transverse sloping floors. 



INCLINED FISH- WAYS 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. 



2P284. Model of old Pennsylvania fish-way. Built at Columbia, on the Sus- 

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

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



With partitions at right-angles. 



29291. Model of rectangular return fish-way. Scale, J inch to the foot. C. 

 G. Atkins, Bucksport, Me. 



26937. Model of the fish-way over the dam at Holyoke, Mass., on the Con- 

 necticut River. Patented by E. A. Brackett, Winchester, Mass. 

 Scale, ^ of an inch to the foot ( cjV )• Model by C. G. Atkins. A sub- 

 merged piece of cob-work surmounted by a grating serves to turn 

 the fish into the fish-way. It carries a colimni of water 2 feet wide 

 and 2 feet deep which reaches the bottom with no perceptible in- 

 crease 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. 



