160 EDWARD JENNER 



February the I3th, 1797, I availed myself of an opportu- 

 nity 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 per- 

 ceptibly inflamed on the third day. After this the inflam- 

 mation 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 produc- 

 ing the most distant mark of affection of the system. 



CASE VIII. Elizabeth Wynne, aged fifty-seven, lived as 

 a servant with a neighbouring farmer thirty-eight years ago. 

 She was then a dairymaid, and the cow-pox broke out among 

 the cows. She caught the disease with the rest of the family, 

 but, compared with them, had it in a very slight degree, one 

 very small sore only breaking out on the little finger of her 

 left hand, and scarcely any perceptible indisposition follow- 

 ing it. 



As the malady had shewn itself in so slight a manner, 

 and as it had taken place at so distant a period of her life, 

 I was happy with the opportunity of trying the effects of 

 variolous matter upon her constitution, and on the 28th of 

 March, 1797, I inoculated her by making two superficial 

 incisions on the left arm, on which the matter was cautiously 

 rubbed. A little efflorescence soon appeared, and a tingling 

 sensation was felt about the parts where the matter was 

 inserted until the third day, when both began to subside, and 

 so early as the fifth day it was evident that no indisposition 

 would follow. 



CASE IX. Although the cow-pox shields the constitution 

 from the smallpox, and the smallpox proves a protection 

 against its own future poison, yet it appears that the human 

 body is again and again susceptible of the infectious matter 

 of the cow-pox, as the following history will demonstrate. 



William Smith, of Pyrton in this parish, contracted this 

 disease when he lived with a neighbouring farmer in the 





