It is truly painful to say that the common opinion about the great labour of experiment, to which Jenner submitted himself, before he announced what is wrongly called his discovery, is mere childish adulation. His experiments are enumerated by himself, and may be put with observations without experiment, at 23; so that compared with the intense labour by which researches of a physiological kind are ordinarily carried out; they really rank as nothing in respect of labour (Disciples of Aesculapius-Jenner, 1900, pp 397-398).