Cowpox children. In 1796, British medical practitioner Edward Jenner tested the theory that cowpox could protect someone from being infected by smallpox. Although cowpox originates on the udder of cows, Jenner took his sample from a milkmaid, Sarah Nelmes. Jenner extracted the pus of one of the lesions formed by cowpox on Nelmes to another individual who never had smallpox, James Phipps. He eventually developed a scab and fever that was manageable. Approximately six weeks later, Jenner then introduced an active sample of the smallpox virus into Phipps to test the theory. After being observed for an extended amount of time,
Royal Edward (1796 ship) Royal Edward (1796 ship) Royal Edward was launched in 1782 in France as "Alexandre". The British captured her c.1796, and new owners changed her name. She then sailed for a few years as a West Indiaman before completing four voyages as a slave ship. She returned to the West India trade after leaving the slave trade, and then traded more generally. She was condemned as unseaworthy and broken up in Bengal in 1815. "Royal Edward" was launched in 1782, in France, as "Alexandre". She was reportedly a prize to . "Alexandre" was condemned in Prize Court and sold. New owners