He appears to have used his family in his experiments, and a young son was the subject of a series, in which Dr Oliver measured the diameter of the radial artery, and observed the effect upon it of injecting extracts of various animal glands under the skin . & We may picture, then, Professor Schafer, in the old physiological laboratory at University College, & finishing an experiment of some kind, in which he was recording the arterial blood pressure of an anaesthetised dog . & To him enters Dr Oliver, with the story of the experiments on his boy, and, in particular, with the statement that injection under the skin of a glycerin extract from calf s suprarenal gland was followed by a definite narrowing of the radial artery.
