"And his blood is three times as warm as mine. I need not tell you that, doctor."
"How do you know?"
"How do I know?" speaking contemptuously—"does not everybody know that?"
"How hot do you suppose your blood is?"
"I don't know."
"Let us suppose it to be eighty degrees. Three times eighty would be two hundred and forty. Water boils at two hundred and twelve. If it be indeed true that the lad's blood is above the boiling-point, I must agree with you that his clothes are quite sufficient to keep out the cold at any season."
"You understand me well enough, doctor," replied Maxwell, exhibiting a good deal of confusion. "I mean that a boy's blood is much warmer than a man's, which, with his greater activity, causes him to be less affected by cold. I have seen a good deal of boys, and have been a boy myself, and know all about it."
"Generally speaking, what you affirm about the greater warmth of young persons is true," I said to this. "But there are many exceptions. It is true, where there is good health, good spirits, plenty of good food, and activity. But it is not true where these are lacking. Nor is it true in any case to the extent you seem to imagine. Particularly is it not true in the case of the boy about whom we are conversing."
"Why not in his case, doctor? I can see no reason."
"He has not the vital activity of most boys of his age, and consequently not the warmth of body. His face is pale and thin, and his limbs have not the fulness of youth. He has no activity in his movements."