Cotton Mather, a leading Puritan minister and one of New England�s leading lay doctors, was not satisfied with this passive course of inaction, and so in June he sent letters to many of Boston's physicians suggesting that they try a new form of inoculation, and mentioning the favorable findings of Drs. Timonius and Pylarinus that had been published in the Transactions of the Royal Society of London. Mather was a member of this leading scientific society in England.