Note 142 — Chapter XVIII · HORSEGREASE AS A SOURCE OF VACCINE.
Reading edition
As tradesman, however, Jenner was not honest. He took to market what was not his to sell. The introduction of Cowpox for inoculation (stigmatised in The Inquiry as spurious, not being derived from Horsegrease) was effected by Pearson, and Jenner’s claim to it was an act of piracy.