Public School Domestic Science

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and tartaric. Citric acid is found in lemons, limes and oranges; tartaric acid in grapes; malic acid in apples, pears, peaches, apricots, gooseberries and curran

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ves and cathartics; (6) to stimulate the appetite, improve digestion and provide variety in the diet. Apples, lemons and oranges are especially valuable for the potash salts, lime and magnesia they contain. Fruit as

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are not considered valuable as nutrients. Cocoanuts,

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preparation made from the leaves of a shrub called Thea. The difference between black and green tea is due to the mode of preparat

ea. Bla

otein 37

10.0

al matter)

e 3.2

n 10.

trogen 5

of the leaves, which become tough as they grow older, and the care exercised in their preparation. Much depends upon the manner in which tea is infused. (1) Use freshly boiled water; (

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e dried, roasted and browned. The following table gives an

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14

fibr

eral mat

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inoid

ogenous ma

m and dex

racted, which renders it more indigestible. Much controversy has been indulged in over the effect of coffee upon the system, but like many other similar questions it ha

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coffee, although their use in this respect is not of much val

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genous subs

30

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eral mat

-nitrogenous

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for the health of the human organism. (Se

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of such condiments as pepper, curry, pickles, vinegar and mustard, if abused, is decidedly harmful. Salt is the only necessary condiment, for reasons given in the chapter on mineral matter. The blending of flavors so as to