39. Why should our clothing always fit loosely?
40. Why should we take special pains to avoid clothing that is colored by poisonous dyestuffs? (See p. 296.)
41. What general principles should guide us as to the length and frequency of baths In salt or fresh water?
42. What is the beneficial effect of exercise upon the functions of the skin?
43. How can we best show our admiration and respect for the human body?
44. Why is the scar of a severe wound upon a negro sometimes white?
IV.
RESPIRATION AND THE VOICE.
"The smooth soft air with pulse-like waves
Flows murmuring through its hidden caves,
Whose streams of brightening purple rush,
Fired with a new and livelier blush;
While all their burden of decay
The ebbing current steals away."