How does it make the skin a bad color?—"It stretches the little blood-vessels of the skin, and makes them too full of blood." [See Appendix.]
A, the right ventricle; B, the left ventricle; C, the right auricle D, the left auricle; E, the aorta; F, the pulmonary artery.
PART VIII.
FORMULA FOR THE LESSON ON THE HEART AND THE CIRCULATION OF THE BLOOD.
1. My heart is shaped like a cone, and placed in my chest near my breastbone, with its apex pointing downward to my left side. It beats about seventy times a minute, sending out about two ounces of blood at every beat.