3. About the same period also the breasts of females enlarge, and the catamenia make their appearance. They resemble the blood of a newly killed animal. In young girls only do they appear white, especially if they make use of fluid food. This complaint stops the growth and weakens the body of girls. The catamenia usually appear when the mammæ are about two fingers high. The voice of girls also becomes deeper at this period, for on the whole the voice of women is more acute than that of men, and the voice of girls than that of old women, as the voice of boys is more acute than the voice of men. The voice of female children also is more acute than that of males, and the windpipe is more acute in girls than boys. 4. They also want especial care at this period, for their sexual desires are very strong at the commencement, so that if they now take care to avoid every excitement, except such as the change of their body requires, without using venery, they generally remain temperate in after-years. For girls who indulge in venery when young, generally grow up intemperate; and so do males if they are unguarded either one way or both ways; for at this age the ducts open and afford an easy passage for the fluid through the body, and at the same time the memory of past pleasures causes a desire for present gratification. 5. Some men never have hair on the pubes from their birth, nor seed, on account of the destruction of the parts appropriated to the semen. There are some women also who never have hair on the pubes. The male and female also change their habits of sickness and of health, and the proportions of their body, whether slight or stout, or of a good habit. Some thin boys after they attain puberty become stout and healthy, in others the contrary takes place. This is the case also with females; for whether boys or girls have their bodies loaded with excrementitious matter, this is separated in the one by puberty, in the other by the catamenia. They become more healthy and thriving when that which had prevented health and growth is removed. 6. Those which are of the contrary habit of body become more thin and delicate; for their naturally healthy condition is separated in the puberty of one sex, and the catamenia of the other. There is also considerable variety in the bosoms of young girls, for in some they are very large, in others small. This generally takes place in those girls which have much superfluous humour, for when the catamenia are about to appear, but before they arrive, the more fluid the patient is, the more necessary it is that the breasts should increase until the catamenia make their appearance, and the breasts, which then begin to increase, remain so afterwards. In youths and aged men the breasts are more conspicuous, and more like those of females; and in those who are of a soft habit of body, and are smooth and not full of veins, and in dark persons also more than fair ones.