File:Report of the Commissioner - United States Commission of Fish and Fisheries (1902) (14778755341).jpg

Identifier: reportofcommissi281902unit (find matches)
Title: Report of the Commissioner - United States Commission of Fish and Fisheries
Year: 1904 (1900s)
Authors: United States. Bureau of Fisheries
Subjects: Fisheries
Publisher: Washington, The Commission U.S. Govt. Print. Off
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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ure oil as it settles and conducts itto near the top of the second vat, where the oil and water are furtherseparated. At the bottom of each settling tank is deposited a quantity of finelj^-divided fleshy substance known as gurr3^ Tliis is removed fromthe tanks to the gurry room, where it is treated or sprinkled withsuliihuric acid to facilitate the separation of the oil from the fleshfiber. It is then placed in bags, 2 gallons to the bag, and these placedin pairs under a press and subjected to great pressui-e, resulting in asmall quantitj^ of oil. The residuum in the bags, consisting of a hardcake, is broken up and either discarded or mixed with the scrap. When thoroughly separated from the water, the oil is pumped intosuitable storage tanks or barreled. The refining or bleaching of theoil is rarely done at the factories, but is performed by the oil-refinersof New York, New Bedford, Boston, etc., and the methods and resultshave already been described on p. 334. Report U, S. F. C. 19C:
Text Appearing After Image:
AQUATIC PRODUCTS AS FERTILIZERS. 205 mi cl. <^^ 1„ gallons or more per tl,„us,u,d fish, ,„■ ratli.r tor each 22 000 F- ;?T^ r *,:■ ^•™ •■* «°t«™ localities E,o„ ,„ the same loeahty the flsh are Tery much fatter throu.C tsome years tha,. m others. For instance, the average yie 1,1 oTffietsl, taken ,n Che.sapeake Bay i„ 18.87 was neari,- 6 ga Ions to (lethousand, whereas in 1888 it was a little over 2 o-a Ions anTe- 1that season it was less than 1 pint to the thou ami flh sL J ago one of the Shelter Island factories secured torn o^;e lot o hi:yield of 24 gallons to the thou.sand. The lar..est vMd lro„!i /t «notice of the writer was derived fron, .some me, ,,Ten tl aM 1 ? :;;ftrrtrr^^- ^^^^^^^^^^^ If fW n bay these became so fat that they yielded at theme of 48 gallons of oil per thousand fish. Considei4g- tie en^reAtlantic coast for a series of ten years endino^ in 1809 u ^ ! .?each thousand flsh yielded 4.50 ilonsTf iCdSs\^, L:rLtconta.nmg 10 per cent

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