He was the Jenner of our modern style, inoculating and saving us all by his quaint frank Germanism, then dying of his own disease.

But withal, though he must have been well aware of John Hunter's advice to Jenner on vaccination, "Don't think, make some observations," his training in the indirect reasoning and deductions of the clinician prevented him from going right on to a direct experimental test of his theories.

Lady Mary Wortley Montague introduced inoculation into Europe; and the intelligent observation of a farmer's wife led Dr. Jenner to his experiments with vaccine matter.