For all kinds of food have supplies for every want of the body, though
in different proportions. Thus, for example, if the muscles are worked
a great deal, food in which nitrogen abounds is required, and the
appetite will continue until the requisite amount of nitrogen is
secured. If, then, food is taken which has not the requisite quantity,
the consequence is, that more is taken than the system can use, while
the vital powers are needlessly taxed to throw off the excess.
These facts were ascertained by Liebig, a celebrated German chemist
and physicist, who, assisted by his government, conducted experiments
on a large scale in prisons, in armies, and in hospitals. Among other
results, he states that those who use potatoes for their principal
food eat them in very much larger quantities than their bodies would
demand if they used also other food. The reason is, that the potato
has a very large proportion of starch that supplies only fuel for the
capillaries and very little nitrogen to feed the muscles. For this
reason lean meat is needed with potatoes.
In comparing wheat and potatoes we find that in one hundred parts wheat
there are fourteen parts nitrogen for muscle, and two parts phosphorus
for brain and nerves.
Pages:
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172