Bulletin of the U.S. Department of Agriculture, Issues 1026-1050The Department, 1923 |
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Common terms and phrases
50 galls acre-feet acreage acres amount arsenious oxid average black-leg Bordeaux Bordeaux mixture Bull Cache la Poudre Calyx cent coal-tar creosotes cocoons copper cost cows crop distillation drought farmers farms feed feet fireworm fish-oil fish-oil soap forage Fort Collins fruit fungus ginning grams grapes grazing Greeley Canal herd inches irrigation Jornada Range Reserve July June June 12 labor Lake Canal Larimer and Weld Larimer County Canal larva larvæ lead arsenate powder lime lime-sulphur 32 loss Meade cotton melanoscelus milligrams North Poudre Canal nozzle parasite Paris green plants plat Poudre Valley pound of lint production Pulp Reservoir reservoir water river Sea Island cotton season second-feet Sept shown Skin specific gravity sprayed Stem ends sulphur Sumter County supply TABLE temperature Terry Lake tion Trace treatment U. S. Dept unsprayed Unwashed vines Washed Weld Canal yields
Popular passages
Page 100 - The receivers shall be changed as the mercury passes the dividing temperature for each fraction. When the temperature reaches 355°, the flame shall be removed from the retort, and any oil which has condensed in the offtake shall be drained in the 355° fraction. The residue shall remain in the retort with the cork and the thermometer in position until no vapors are visible; it shall then be weighed. If the residue is to be further tested it shall then be poured into the brass collar used in the...
Page 105 - The brass collar shall be placed with the smaller end on a brass plate which has been previously amalgamated with mercury by first rubbing it with a dilute solution of mercuric chloride or nitrate and then with mercury. The sample shall be poured into the collar in any convenient way until slightly more than level with the top.
Page 31 - Pennsylvania, Ohio, West Virginia, Kentucky, Indiana, Michigan, Wisconsin, Illinois, Missouri, Iowa, Minnesota, North Dakota, South Dakota, Nebraska, and Kansas...
Page 105 - ... bath. As the plug of material becomes warm and fluid, it is forced upward and out of the collar until the water gains entrance into the saucer and causes it to sink.
Page 100 - Exactly 100 g. of oil shall be weighed into the retort, the apparatus assembled and heat applied. The distillation shall be conducted at the rate of at least one drop and not more than two drops per second, and the distillate collected in weighed receivers. The condenser tube shall be warmed whenever necessary to prevent accumulation of solid distillates.
Page 100 - ... drops per second, and the distillate collected in weighed receivers. The condenser tube shall be warmed whenever necessary to prevent accumulation of solid distillates. Fractions shall be collected at the following points: Up to 210° C. ; up to 235° C.
Page 100 - ... fraction. The residue shall remain in the retort with the cork and the thermometer in position until no vapors are visible; it shall then be weighed. If the residue is to be further tested, it shall then be poured directly into the brass collar used in the float test, or into a tin box, and covered and allowed to cool to air temperature.
Page 100 - ... back of the retort, when the latter is In position for the test, and sighting the level of the liquid and the point for the bottom of the thermometer bulb. The axis of the bulb through the tubulature shall be vertical.
Page 105 - The volume of residue thus obtained is caleulated to the original oil." DETERMINATION OF TAR ACIDS One hundred cubic centimeters (100 cc) of the total distillate to three hundred and fifteen degrees (315° C.), to which forty cubic centimeters (40 cc) of a solution of sodium hydroxide having a specific gravity of one and fifteen hundredths (1.15) is added, is wanned slightly and placed in a separatory funnel.