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30 in their State of Maturation swell the Face very much, and turn by degrees to a dark brown Crust or general Scab, which often continues undigested and unseparated from the Skin many Days: So that in this Case, which is the chief Province of a Physician, it is an Error to assign the eleventh Day as decisive of the Event; for it often happens that this is not the determining Period in this Kind of Small-Pox; for all Practisers must know that the Small-Pox of this Sort are most frequently carried on beyond those Limits for many Days; and after the Face is altogether, or almost, clear'd of the Pustules, the Fever will often survive and maintain its Ground a great deal longer,, and till that be reduc'd, and the Pulse restor'd to their natural Standard, the Distemper cannot be looked upon as judg'd and concluded; for after the eleventh Day the Fever proves often fatal, sometimes by terminating in Convulsions, sometimes in a hectical and consumptive Wasting; and it is absurd to say, that the Patients in such Cases did indeed escape the Small-Pox, but dyed of Convulsions, or, a Consumption, after they were recover'd from the other Disease whence those Symptoms proceeded.

Sometimes the Confluent Crust, or general Scab on the Face is of a dull, leaden Colour, which it acquires from the great Crudity and ill Condition of the Matter, of which they are form'd; and I have known that the Confluent Pustules of this Aspect have con-