disinfecting raw foods, 43.

Personal equation, hygienic living and the, 139-140.

Perspiration, benefits of, 76.

Philosophy, help to be obtained from, in field of mental hygiene, 114;
Oriental superior to Occidental in training in control of attention,
115-116.

Physical examinations, a remedy for degenerative tendencies, 292.

Physiological effects of alcohol, 236-244.

Pickles, table of food values of, 182.

Pie, food value of, 29, 179.

Pillows, use of, in sleeping, 104.

Plague, spread by fleas and lice, 74-75.

Play, the halfway stage between work and rest, 100-101.
_See_ Work and play.

Playgrounds, outdoor, 19.

Plays, hygienic value of, as recreation, 99.

Pneumonia, outdoor treatment for, 21;
trend of death rate from, 285.

Poisons, from constipation, 51-56;
relation of posture to, 57-64;
habit-forming drugs and patent medicines, 65;
substitution of milder for the more injurious, 65-66;
alcohol, 67-68, 227-249;
tobacco, 68-69, 250-271;
infections with germs, 69-78;
teeth and gums as a source of infection, 78-81;
focal infection and autointoxication, 81-83.

Poor, disadvantages of the, in opportunities to live a healthy
life, 128.

Posture, physical value of an erect, 57;
breathing exercises for correcting evils of, 58;
in standing and walking, 58-59;
of the feet, 59-60;
in sitting, 60-62;
pains due to faulty, 62;
effects of faulty, in children, 62;
teaching of correct, 63;
relation to character, 63-64;
corrective exercises for faulty, 221-223;
in cases of flat foot, 223.

Potatoes, food value of, 29, 176;
valuable because of alkalinity, 43;
among the best foods, 48;
a cheap source of starch and sugar, 131;
for underweight, 220.

Preservatives, harmful, 65.

Preventability of disease and death, 135-136.

Preventive dental treatment, 86-87.

Preventive medicine, practise of, 2-3;
application of methods by people themselves, 3.

Program, constructing a day's, 120;
main features of a eugenic, 167.

Prostitutes, disease among, 77.

Prostitution. _See_ Social evil.

Protein, function of, as a constituent of food, 35-36;
examples of, 36;
question of right proportion of, 36-37;
common error of diet in using too much, 38;
injuries from overabundance of, 38-39;
poisoning caused