. Citrus fruits; an account of the citrus fruit industry, with special reference to California requirements and practices and similar conditions . asphaltum and paraffine. The crude oils ofthe Eastern states have chiefly a paraffine base, whilenearly all Pacific Coast oils have an asphaltum fuel oils on the market are residuals, the gasoline andother lighter oils for which there is a large demand havingbeen removed in the refining process. What is known ascrude oil is not petroleum as it comes from the wells, buta refinery residuum containing some of the heavy oils, avariable amount o
. Citrus fruits; an account of the citrus fruit industry, with special reference to California requirements and practices and similar conditions . asphaltum and paraffine. The crude oils ofthe Eastern states have chiefly a paraffine base, whilenearly all Pacific Coast oils have an asphaltum fuel oils on the market are residuals, the gasoline andother lighter oils for which there is a large demand havingbeen removed in the refining process. What is known ascrude oil is not petroleum as it comes from the wells, buta refinery residuum containing some of the heavy oils, avariable amount of asphaltum, together with some sul-fur and a little water. The types of oil commonly used are the so-called crudeoil, smudge oil, slop distillate, and stove distillate. A Frost and Orchard Heating 261 particular <frade of oil is usually recomuiended for eachtype of heater. A jijood grade of oil fairly free fromasphaltum, such as 20 gravity sloj) distillate for instance,costs about two cents per gallon in carload lots deliveredon siding in southern California citrus districts. Thecars vary in capacity from GOOO gallons minimum to 12,000. Fig. 89. ? Coal burning orchard heaters,trees. Fuel stored in boxes under gallons maximum. One great advantage in this oil as afuel is its availability in very large quantities. Duringthe blizzard of January, 1913, trainloads were ordered bytelephone one day, and the oil was dispatched in trainshaving right-of-way, and was delivered, and in someinstances was actually gotten into the heaters and firedbefore daylight next morning. The density of the fuel oils varies from 14 degrees 262 Citrus Fruits Baume to 35 degrees or more. Specific gravity variesfrom .850 or less to as lieavy as .975. The heating vahieis usually stated in British Thermal Units, and variesfrom 17,500 to 19,100 B. T. U. a pound.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcitrusfruits, bookyea
