Hand-book of Sanitary Information for Householders: Containing facts and suggestions about ventilation, drainage, care of contageous diseases, disinfection, food, and water. With appendices on disinfectants and plumbers' materials.Tracy, Roger Sherman
Science
Hand-book of Sanitary Information for Householders: Containing facts and suggestions about ventilation, drainage, care of contageous diseases, disinfection, food, and water. With appendices on disinfectants and plumbers' materials.
Tracy, Roger Sherman
Disinfection and disinfectants; Drinking water; Food adulteration and inspection; Hygiene; Sanitation, Household; Ventilation
=Sirups.=—Three samples of maple-sirup. Two were pure, and one,
manufactured in Chicago and sold in cans, contained 35 per cent of
artificial glucose. In 1870 Dr. Chandler found .02 per cent of tin in
each of two samples of sugar-house sirups. This represents .8 grain
of tin to the gallon. A common adulterant of sirups is glucose, which
diminishes their sweetening power, but is not considered injurious.
=Spices.=—One hundred and eighty samples, comprising mustard, ginger,
allspice, cinnamon, cassia, cloves, white, black, and red pepper, mace,
and nutmeg. One hundred and twelve were adulterated from 40 to 81.8 per
cent. All the adulterations were harmless (wheat and buckwheat bran,
hulls of different seeds, middlings of corn-meal, stale ship’s bread,
peas, beans, etc.). No poisonous substance was found. (Lattimore.)
=Sugar.=—One hundred and sixteen samples, principally collected in New
York city. Care was taken to secure the samples from different sections
of the city and from all classes of stores. Of these, thirtyfour were
microscopically clean, fifty-four slightly contaminated with dust,
twenty-two contained considerable dirt, and six were very dirty. But in
no case was there an intentional addition of insoluble mineral matters.
Of forty-nine white sugars, all were pure; of sixty-seven brown sugars,
four were adulterated with glucose. (A. L. Colby, Ph. B.)
There have been many exaggerated statements put forth regarding the
adulteration of sugar. In 1870 Dr. Chandler reported to the New York
City Board of Health that sixty samples of sugar bought at small
groceries were found pure and unadulterated without exception. In 1872,
Elwyn Waller, for the same board, examined one hundred and nine samples
of powdered sugar, but found no adulteration.
Powdered sugar is quite generally believed to be adulterated with
gypsum or flour. As both of these adulterants are insoluble in water,
it is easy for any one to convince himself of the purity of sugar by
dissolving it in water.
=Teas.=—Forty-three samples of green tea, and eighteen of black. Many
were cheap and of very inferior quality, some mere tea rubbish, yet no
leaf, or fragment of a leaf, which was examined, could be considered
anything but tea. No adulterations were found, and even the admixture
of exhausted leaves could not be positively asserted. (Lattimore.)
Suspected leaves should be wet and spread out, and then compared with
leaves known to be genuine. It is said that exhausted leaves of
green tea are often colored or “faced” with plumbago, Prussian blue,
soapstone, etc., so artfully that only an expert can detect the fraud.
Black tea is generally pure.
=Vinegar.=—Four samples, all poor, but not adulterated, unless with
water. (Lattimore.)
=Whisky.=—Twenty-five samples. Fusel-oil decided in twenty, and traces
in the rest. No injurious adulteration found. “It is evident that the
addition of water and coloring-matter is practiced more than any other
adulteration.” (Engelhardt.)
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