But, unfortunately, there is no other duty
that has been involved in more doubt and perplexity. Were one to believe
all that is said and written on this subject, the conclusion probably
would be, that there is not one solitary article of food on God's earth
which it is healthful to eat. Happily, however, there are general
principles on this subject which, if understood and applied, will prove
a safe guide to any woman of common sense; and it is the object of the
following chapter to set forth these principles.
All material things on earth, whether solid, liquid, or gaseous, can
be resolved into sixty-two simple substances, only fourteen of which
are in the human body; and these, in certain proportions, in all
mankind.
Thus, in a man weighing 154 lbs. are found, 111 lbs. oxygen gas, and
14 lbs. hydrogen gas, which, united, form water; 21 lbs. carbon; 3
lbs. 8 oz. nitrogen gas; 1 lb. 12 oz. 190 grs. phosphorus; 2 lbs.
calcium, the chief ingredient of bones; 2 oz. fluorine; 2 oz. 219 grs.
sulphur; 2 oz 47 grs. chlorine; 2 oz. 116 grs. sodium; 100 grs. iron;
290 grs. potassium; 12 grs. magnesium; and 2 grs.
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