Qualitative tests made for nitrogen indicated its presence in each one
of the condiments examined.
It is of importance to observe that the majority of these condiments are
fruits, ripe or nearly so. The seed appropriates to itself the nitrogen
and the greatest nutritive properties for the development of the future
plant. All nutritive substances fall into two classes: the one serves
for the repair of the unoxidizable constituents of the body, the other
is destined to replace the oxidizable. Condiments fulfill both of
these requirements, as is shown by a study of their composition; the
phosphoric acid and nitrogen are taken up by the tissues, as from other
substances used in diet. Some articles affect the character of the
excretions; this is often due to essential oils; the presence of these
in the excretions cannot be said to diminish the value of the substances
in supplying the tissues the necessary elements. The same holds true for
condiments; the essential oils conspicuous in them are accorded only
stimulating properties; however, it may be observed that the essential
oils in tea and coffee are accredited with a portion of the dietetic
value of these beverages.
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