"Don't think; try."

"The cow-pox is a mild disease, and never fatal; the small-pox is a formidable one, and often fatal. The cow-pox is not infectious; the small-pox is highly so."

"The most curious circumstance attending this disease, is, that the matter taken from the pock of a Cow, and inserted into the skin of a human being, will produce a disease in that human being, which w…"

"It is a pity that the practice of inoculation has not been more generally adopted; for if it had, many lives might have been saved."

"It is a fortunate circumstance, that the Cow Pox is not infectious; for if it were, it would be a source of great alarm."