86 REPOKT OF COMMISSIONER OF FISH AND FISHERIES. 



of 6 feet 1^ inches, with 18 paddles 19 inches wide. It runs on a 

 3^-inch shaft, and makes about 6 revolutions per minute when driv- 

 ing- the pump. The power is conveyed by an 8-segment gear of 184 

 teeth bolted to the framework of the wheel and driving a 24-tooth 

 pinion, to the shaft of which is keyed the main driving-pulley, Q^ feet 

 in diameter. The pump is operated by a 7-inch pulley, driven by an 

 8-inch rubber belt 80 feet long. This wheel is so built on its sup- 

 porting frames that by means of a tackle it can be raised or lowered 

 to meet the exigencies of rising or falling waters in the river, as at 

 certain heights of water it becomes impossible to use the water-wheel. 

 To meet such*einergencies a steam pumping-plant was installed, capa- 

 ble of furnishing 300 to 400 gallons of water per minute. This plant 

 consists of a Blake special duplex pump, operated by a 15-horsepower 

 Atlas locomotive boiler, and is set about 17 feet above the river at 

 extreme high-water level. It is operated when the regular supply 

 is disabled, and has proved very satisfactory. A suitable building 

 with corrugated-iron roof was erected over this plant, 



Fish-cultural work commenced August 21 and continued steadily 

 until September 27, when the summer run was over. The fall run 

 commenced October 18 and continued until November 9. During the 

 first run 14,017 females and 8,047 males were captured in the 353 

 seine-hauls made; of these, 914 males and 1,222 females were placed 

 in the spawning-pens. From the trap, which is located in the upper 

 rack, 108 females were secured and 34 were taken with a dip net. 

 The total number of fish handled does not indicate the real number in 

 the pool, as it is customary to count them as often as they are caught. 

 There were, perhaps, between 3,000 and 4,000 fish in the pool during 

 the summer run, though not over a third of that number were in the 

 pool at one time. The fall run was very irregular, and onl}^ 173 fish 

 were captured; of these, 101 females were placed in the pound. 



The seining is done in the pool between the upper and lower racks, 

 and is carried on daily from 5 to 10 a. m. and from 5 to 10 p. m. The 

 seine is run out in a flat-bottomed boat and hauled in by a windlass, 

 operated by two men and a one-horse whim. While operating the 

 seine at night it is necessary to keep a fire on the bank for warmth 

 and light, and lanterns are hung up around the fishing-grounds to 

 enable the men to examine the fish as they are captured. 



Many fish are necessarily held in the pool for eight or ten weeks, and 

 it has been noticed that there is a decided difference in the condition 

 of the ripe fish, some being dark, with fins frayed, noses bitten, and of 

 a generally dilapidated appearance, while others are bright, silvery, 

 plump, and pliable. The former are those that have been in the pool 

 for a long time, the latter are fresh-run fish. It is much more difficult 

 to take eggs from the old-run fish, but no experiments have been con- 

 ducted to determine whether they are actually inferior to the eggs 

 from fresh-run fish. 



The methods of taking the eggs are the same as heretofore. After 



