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Several reasons proving that inoculation or transplanting the small pox, is a lawful practice, and that it has been blessed by God for the saving of many a life / by Increase Mather. Sentiments on the small pox inoculated. By Cotton Mather. Reprinted from the original folio single sheet printed at Boston in 1721 ; with an introduction by George Lyman Kittredge. Public Domain Mark. Source: Wellcome Collection.