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REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



[48] 



LIST OF PLATES. 



-United States Fish Commission steamer Fish Hawk. 



-Port side of main declv, showing portion of hatching machinery. 



-Hatching cylinders, port side. 



-One hatching cone, 3 hatching cylinders, 1 siphon funnel, 2 spawn 

 pans, 1 spawn pail, 1 spawn dipper. 



-Hoisting and reeling engine from forward looking aft. 



-Hoisting and reeling engine from aft looking forward. 



-Safety hooks, showing spring. 



-Accumulator, with dredging block hooked; safety book; brass washer. 



-The beam trawl ready for lowering. 



-^Dredge-safety hook, water bottle, dredge- weight and tangles, Ches- 

 ter rake dredge. 



-The table sieve and cradle sieve, hopper and tray exposed. 



-Main deck, starboard side, table sieve, swinging table and collecting 

 apparatus. 



-Sounding machine, with Negretti and Zambra deep-sea thermometer 

 descending. 



-Sounding machine, with Negretti and Zambra deep-sea thermometer 

 ascending. 



-Sounding machine, with Bassnett's patent atmospheric lead. 



-The Negretti and Zambra deep-sea thermometer, with wooden frame 

 and metal case. 



-The Miller-Casella deep-sea thermometer in and out of case. 



-Hilgard's ocean salinometer. 



