as shall give the child a good fundamental knowledge of the structure
and functions of the human body.

3. To present each topic in such clear and simple language as to enable
the pupil to comprehend the subject-matter with little aid from the
teacher; and to observe in the manner of presentation the principle that
the things to be studied should be placed before the mind of the child
before they are named. A natural and logical order has been observed in
the sequence of topics. Technical terms have been used very sparingly,
and only in their natural order, and are then fully explained and their
pronunciation indicated, so that it is not thought necessary to append a
glossary.

4. To present the subjects of Physiology and Hygiene in the light of
the most recent authentic researches in these branches of science, and
to avoid the numerous errors which have for many years been current in
the school literature of these subjects.

There is no subject in the presentation of which object-teaching may be
employed with greater facility and profit than in teaching Physiology,
and none which may be more advantageously impressed upon the student's
mind by means of simple experimentation than the subject of Hygiene.
Every teacher who uses this book is urgently requested to supplement
each lesson by the use of object-teaching or experiments. A great number
of simple experiments illustrative of both Physiology and Hygiene may be
readily arranged. Many little experiments are suggested in the text,
which should invariably be made before the class, each member of which
should also be encouraged to repeat them at home.

It is also most desirable that the teacher should have the aid of