As a matter of fact Chicken-pox is of congeneric origin with small-pox,
with which, in a very much milder degree, it has various features in
common. But small-pox itself is engendered of foul and insanitary
conditions of life, impure blood and bad and insufficient nourishment
and these, together with its risk under unscientific conditions and in
times past of facial disfigurement, have made its name more repugnant to
the layman than perhaps any other form of disease. All that need be said
about it here, however, is that it is largely a terror of the past and
that the sure preventative against it always, and the one reliable
anti-toxin against contagion, under all circumstances, is good healthy
blood and hygienic-dietetic living.
Those readers who may desire a minute description of this form of
disease will find the same in chapt: XII of my greater work
"Regeneration."