weather: with the age of an individual, very old and very young persons
requiring less food than those of middle age. An unperverted appetite,
not artificially stimulated, is a safe guide. Drowsiness, dullness, and
heaviness at the stomach are indications of an excess of eating, and
naturally suggest a lessening of the quantity of food, unless the
symptoms are known to arise from some other cause.

"_Excess of Certain Food Elements._--When sugar is too freely used,
either with food or in the form of sweetmeats or candies, indigestion,
and even more serious disease, is likely to result. Fats, when freely
used, give rise to indigestion and 'biliousness.' An excess of albumen
from the too free use of meat is harmful. Only a limited amount of this
element can be used; an excess is treated as waste matter, and must be
removed from the system by the liver and the kidneys. The majority of
persons would enjoy better health by using meat more moderately than is
customary in this country.

"_Deficiency of Certain Food Elements._--A diet deficient in any
important food element is even more detrimental to health than a diet in
which certain elements are in excess.

"The popular notion that beef-tea and meat extracts contain the
nourishing elements of meat in a concentrated form, is a dangerous
error. Undoubtedly many sick persons have been starved by being fed
exclusively upon these articles, which are almost wholly composed of
waste substances. Prof. Paule Bernard, of Paris, found that dogs fed
upon meat extracts died sooner than those which received only water."

FOOD COMBINATIONS.--Some persons, especially those of weak
digestive powers, often experience inconvenience in the use of certain