Note 2 — Chapter I
Reading edition
It may not be known to many readers, that it is possible to keep alive for hours and even days the heart entirely removed from the body of a dead mammal. On such a heart the action of drugs can be admirably studied and demonstrated. I once had in my own laboratory a rabbit's heart that continued to beat for nearly five days after the remainder of the rabbit had served for the dinner of my laboratory attendant.—(W. D. H.)