possible for her to have escaped, had she been susceptible
of it, as she regularly attended a relative who had the disease in so
violent a degree that it proved fatal to him.

In the year 1778 the Small Pox prevailed very much at Berkeley, and
Mrs. H---- not feeling perfectly satisfied respecting her safety (no
indisposition having followed her exposure to the Small Pox) I
inoculated her with active variolous matter. The same appearance
followed as in the preceding cases--an efflorescence on the arm
without any effect on the constitution.

[Footnote 1: When the Cow Pox has prevailed in the dairy, it has
often been communicated to those who have not milked the cows, by the
handle of the milk pail.]

_CASE VI._

It is a fact so well known among our Dairy Farmers, that those who
have had the Small Pox either escape the Cow Pox or are disposed to
have it slightly; that as soon as the complaint shews itself among
the cattle, assistants are procured, if possible, who are thus
rendered less susceptible of it, otherwise the business of the farm
could scarcely go forward.

In the month of May, 1796, the Cow Pox broke out at Mr. Baker's, a
Farmer who lives near this place. The disease was communicated by
means of a cow which was purchased in an infected state at a
neighbouring fair, and not one of the Farmer's cows (consisting of
thirty) which were at that time milked escaped the contagion. The
family consisted of a man servant, two dairymaids, and a servant boy,
who, with the Farmer himself, were twice a day employed in milking
the cattle. The whole of this family, except Sarah Wynne, one of the
dairymaids, had gone through the Small Pox. The consequence was, that
the Farmer and the servant boy escaped the infection of the Cow Pox
entirely, and the servant man and one of the maid servants had each
of them nothing more than a sore on one of their fingers, which
produced no disorder in the system. But the other dairymaid, Sarah
Wynne, who never had the Small Pox, did not escape in so easy a
manner. She caught the complaint from the cows, and was affected with
the symptoms described in the 5th page in so violent a degree, that
she was confined to her bed, and rendered incapable for several days
of pursuing her ordinary vocations in the farm.

March 28th, 1797, I inoculated this girl, and carefully rubbed the
variolous matter into two slight incisions made upon the left arm. A
little inflammation appeared in the usua