. Agriculture through the laboratory and school garden. A manual and text-book of elementary agriculture for schools. Agriculture. MILK AND ITS CARE. 179 the top of the pipette closed with th(" fore- finger. (3) Acid Measure.—This holds cubic centimeters, and is usualh' made in the form of a cylinder with a base. The acid used is that known as commercial sulphuric acid, having a specific gravity of to If the acid be a little weak the fact will be known by white sediment appearing under the fat column, and this may be remedied by usinga little more acid in another test. If
. Agriculture through the laboratory and school garden. A manual and text-book of elementary agriculture for schools. Agriculture. MILK AND ITS CARE. 179 the top of the pipette closed with th(" fore- finger. (3) Acid Measure.—This holds cubic centimeters, and is usualh' made in the form of a cylinder with a base. The acid used is that known as commercial sulphuric acid, having a specific gravity of to If the acid be a little weak the fact will be known by white sediment appearing under the fat column, and this may be remedied by usinga little more acid in another test. If the acid be too strong it will be indicated by the column of the fat being blackened and having black sediment below. This can be remedied by using somewhat less acid. Acid very much stronger or weaker than the standard does not give satisfactory results. (4) Centrifugal Machine.—Many forms of machines are made, varying in capacity from two to forty test-bottles. The smaller (Fig. 44) are made for use in small dairies, and run by hand ; the larger ones are used in factory work,. KIG. 44.—HAND-POWER BABCOCK TESTER. This style is made especially for farm Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Jackson, Caroline Ruth, 1871-; Daugherty, Amelia (Crum) "Mrs. L. S. Daughery. " 1859-. New York, O. Judd company
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