Q. Why do wolves grow grisly? A. To understand this question, note the difference between grayness and grisliness; grayness is caused through defect of natural heat, but grisliness through devouring and heat. The
wolf being a devouring beast, he eateth gluttonously without chewing, and enough at once for three days; in consequence of which, gross vapours engendered in the wolf's body, which cause grisliness. Grayness and grisliness have this difference; grayness is only in the head, but grisliness all over the body.
Q. Why do horses grow grisly and gray? A. Because they are for the most part in the sun, and heat naturally causes putrefaction; therefore the matter of hair doth putrefy, and in consequence they are quickly peeled.
Q. Why do men get bald, and trees let fall their leaves in winter? A. The want of moisture is the cause in both, which is proved by a man's becoming bald through venery, because by that he lets forth his natural humidity and heat; and by that excess in carnal pleasure the moisture is consumed which is the nutriment of the hair. Thus, eunuchs and women do not grow bald, because they do not part from this moisture; and therefore eunuchs are of the complexion of women.
Q. Why are not women bald? A. Because they are cold and moist, which are the causes that the hair remaineth; for moistness doth give nutriment to the hair, and coldness doth bind the pores.
Q. Why are not blind men naturally bald?
A. Because the eye hath moisture in it, and that moisture which should pass through by the substance of the eyes, doth become a sufficient nutriment for the hair and therefore they are seldom bald.
Q. Why doth the hair stand on end when men are afraid? A. Because in time of fear the heat doth go from the outward parts of the body into the inward to help the heart, and so the pores in which the hair is fastened are shut up, after which stopping and shutting up of the pores, the standing up of the hair doth follow.