Whilst in the incipient stages of small-pox, was tossed by a cow, which
led him to the discovery of vaccination. Yet he was often without the
means of procuring a ha'porth of milk; so that he was wont to say, when
in a merry mood, that although his discovery had extirpated the
confluent state, it had not left him in an affluent one. Cowes was his
favourite residence, where he died in a state of monomania, fancying
himself one of them.