Chapter IX: PHYSIOLOGY, HYGIENE, ETC.--The Upright Attitude of Mankind

--Review of a lecture by Dr. S.V. CLEVENGER, in which he
tries to prove that man must have originated from a four footed
being.

Our Enemies, the Microbes.--Affections caused by the same.--
Experiments of Davaine, Pasteur, and others.--How to prevent
bacterides from entering the body.--5 figures.