ion between the bones and the rest
of the organs, and the gradual transition into other tissues, are
subjects separate and distinct and will be treated separately.

5. _The muscular tissue_: As to quantity, the muscular tissue represents
the maximum of any in the human body.

The muscles do not only consist solely of this one tissue, but of
several others, as do most of the other organs; but here, as in all
other cases, the principal component element is called after the organ
in which it is chiefly found.

The structure of the muscular tissue varies according to its function,
so that we distinguish between the striated and the unstriated or smooth
muscles. This, however, has no influence on their chemical composition,
a distinctive element of which is muscular fibrin, which has the
particular property of contractibility.

6. _The mucous membrane tissue_: The mucous membrane forms the covering
of many of the organs, and its chemical and structural composition is
identical in all parts of the body.

It is characterized by a viscid watery secretion from the mucous glands,
which are always found in the mucous membrane.

Its extremely delicate nature renders it subject to all sorts of
irregularities in chemical composition.

This is the cause of numerous diseases, most of which are due either to
overproduction or underproduction of the secretion which regulates
numerous functions of the body.

7. _The tooth and eye tissue_: While very different in external
appearance, functions and physical qualities, the teeth and the eyes
have nevertheless, the most important part of their chemical composition
in common; namely, _the fluoric acid_, which distinguishes them from all
other tissues.

In the process of natural healing the replacing of any element lacking
through destructive causes in either tissue will practically be the
same.

8. _The hair tissue_: Certain chemical component elements are only
found in the tissue which is called the hair, and which receives its
nourishment like all other tissues, through the blood.

While the hair may seem to be in apparently slight connection with the
rest of the body, it is in reality, none the less an organic portion of
the same, and dependent, like the rest upon the same central system of
supply.

9. _The skin tissue_: With reference to this tissue, much the same
remarks apply as already mentioned in regard to the mucous membrane. It,
however, has certain chemical elements