. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 50 CALIFORNIA FISH AND OAME About once every two weeks, a net was taken out of the water and given a "blue-stoning" (blue vitriol : CUSO4. SHoO), in order to re- move algae growth that had accumulated on the webbing and ropes. A net was taken out in the morning, allowed to dry during the day, and soaked in the solution over night. The net was placed in a barrel, water poured in to cover the net, and the blue-stone placed in
. California fish and game. Fisheries -- California; Game and game-birds -- California; Fishes -- California; Animal Population Groups; Pêches; Gibier; Poissons. 50 CALIFORNIA FISH AND OAME About once every two weeks, a net was taken out of the water and given a "blue-stoning" (blue vitriol : CUSO4. SHoO), in order to re- move algae growth that had accumulated on the webbing and ropes. A net was taken out in the morning, allowed to dry during the day, and soaked in the solution over night. The net was placed in a barrel, water poured in to cover the net, and the blue-stone placed in a cloth sack on top. The heavier specific gravity of the solution will cause it to shrink readily as it is formed. The proportion of this mixture was 8 pounds of blue-stone to 100 gallons of cold water. RECORDING AND PRESERVATION OF EVIDENCE The specimens or pieces of specimens were tabulated as to the net in which they were found, condition when found in net, species, sex, and length to nearest one-eighth inch. The smaller fish, such as the salmon and shad fingerlings, were wrapped in cheesecloth, while the larger fish and larger pieces were strung together. Tags bearing lot numbers were attached to faciliate examination at any time.* Pood. Fig. 32. Part of one morning's catch, consisting- of nine adult shad which were all damaged by pumps. Photo by Roy W. Anderson, August 18, 1929. and game fishes were separated as much as possible. Weekly reports were sent to the head office. These reports included, besides the above data, the daily records of water temperatures (morning and evening), weather conditions, and heights of water (taken from gauges of Dis- trict). In fact, the daily records and observations can not be too full, as work of this kind will in many cases serve a two-fold purpose: first to determine if valuable fish are being destroyed; second, anything of scientific interest, bearing on the migrations of fish and similar data. The specimens obtained through the sein
Size: 2054px × 1217px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcaliforniadeptoffishandgame, bookauthorcaliforniafish
