Henry N. Guernsey, M. D.,
1423 Chestnut St., Philad'a.

June, 1882.

CONTENTS.

CHAPTER I.
Introductory, 13

CHAPTER II.
The Infant, 24

CHAPTER III.
Childhood, 27

CHAPTER IV.
Adolescence of the Male, 42

CHAPTER V.
Adolescence of the Female, 68

CHAPTER VI.
Marriage.--The Husband, 84

CHAPTER VII.
The Wife, 90

CHAPTER VIII.
Husband and Wife, 100

CHAPTER IX.
To the Unfortunate, 110

CHAPTER X.
Origin of the Sex, 117

CHAPTER I.

Introductory.

In the creation of the world and all that therein is, we should consider
it an axiom that "Everything was created for use." All individual
substances, or beings, that come to our notice bear certain relations to
one another, have connection one with another, and are dependent upon
and useful to each other; and nothing could possibly exist or subsist
without this co-relation: connection with and use to each other. This is
a law which needs only a little reflection to be accepted as a truth in
every particular--in the greatest as well as in the least created form.
This is more plainly seen in the animal kingdom than in the mineral or
vegetable, because its members associate and finally become conjoined in
pairs. Man and woman, who represent the crown and glory of all created
beings, in whom are embodied all the lower orders, were and are still
created to associate in pairs--each created for the other, the one to
help the other; the two to love and to belong to one another. This
principle, fully carried out, justifies and shows the necessity for the
creation of man and woman precisely as they are, having bodies, parts
and passions, will and understanding. It is my intention in the
following pages to explain the relations existing between the sexes, for
the purpose of showing that the greatest happiness to the human race
will be found in living a life in full accord with these relations. In
order that the subject may be fully understood, let us examine the
physical development of man and woman in detail, particularizing the
different organs of the body as they appear in their order of formation,
from the very inmost or beginning, to the ultimate or end, in their
respective natures.

Ever since the primal creation of