When whey is boiled down to a thick syrup and left to stand, the sugar will crystallize out and may be separated from the liquid, still holding in solution the mineral matters.
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Cream
Whole milk
Skim milk
Fat globules as they appear under the microscope
Mineral Matters.—These may be gathered as ash
by boiling off the water from this liquid or from the
whole milk and burning the rest, as all the constituents
except the ash belong to what in
chemistry is called organic matter,
which disappears in the air by burning.
HOW TO TEST MILK
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Dr. S. M. Babcock of Madison, Wis.
Milk may be adulterated or decreased in value either by skimming or by watering. In either case the percentage of the most valuable constituent, the butter-fat, is diminished. It is upon this fact that the most practical test, the Babcock, is based.
