l manner around the parts
where the matter was inserted, but so early as the fifth day it
vanished entirely without producing any effect on the system.

_CASE VII._

Although the preceding history pretty clearly evinces that the
constitution is far less susceptible of the contagion of the Cow Pox
after it has felt that of the Small Pox, and although in general, as
I have observed, they who have had the Small Pox, and are employed in
milking cows which are infected with the Cow Pox, either escape the
disorder, or have sores on the hands without feeling any general
indisposition, yet the animal economy is subject to some variation in
this respect, which the following relation will point out:

In the summer of the year 1796 the Cow Pox appeared at the Farm of
Mr. Andrews, a considerable dairy adjoining to the town of Berkeley.
It was communicated, as in the preceding instance, by an infected cow
purchased at a fair in the neighbourhood. The family consisted of the
Farmer, his wife, two sons, a man and a maid servant; all of whom,
except the Farmer (who was fearful of the consequences), bore a part
in milking the cows. The whole of them, exclusive of the man servant,
had regularly gone through the Small Pox; but in this case no one who
milked the cows escaped the contagion. All of them had sores upon
their hands, and some degree of general indisposition, preceded by
pains and tumours in the axillae: but there was no comparison in the
severity of the disease as it was felt by the servant man, who had
escaped the Small Pox, and by those of the family who had not, for,
while he was confined to his bed, they were able, without much
inconvenience, to follow their ordinary business.

February the 13th, 1797, I availed myself of an opportunity of
inoculating William Rodway, the servant man above alluded to.
Variolous matter was inserted into both his arms; in the right by
means of superficial incisions, and into the left by slight punctures
into the cutis. Both were perceptibly inflamed on the third day.
After this the inflammation about the punctures soon died away, but a
small appearance of erysipelas was manifest about the edges of the
incisions till the eighth day, when a little uneasiness was felt for
the space of half an hour in the right axilla. The inflammation then
hastily disappeared without producing the most distant mark of
affection of the system.

_CASE VIII._

ELIZABETH WYNNE, aged fifty-seve