Under Rodway’s Case Jenner showed that the farmers were at fault in supposing that Smallpox kept off Cowpox. In the dairy where Rodway was employed, all the milkers had passed through Smallpox, except Rodway, and all contracted Cowpox; “but there was no comparison in the severity of the disease as it was felt by them and by Rodway. While he was confined to bed, they were able, without much inconvenience, to follow their ordinary business.” Thus Jenner argued that though Smallpox might not keep off Cowpox, it made Cowpox milder. VIII.--ELIZABETH WYNNE, Dairymaid. In 1759 had Cowpox slightly when 19 years of age. “As the malady had shown itself in so slight a manner,” observed Jenner, “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” without effect. Nevertheless in the following year, 1798, she again caught Cowpox, having a “large pustulous sore” accompanied with “general lassitude, shiverings, alternating with heat, coldness of extremities, and a quick and irregular pulse.” IX.--WILLIAM SMITH, Farm Servant. Although [wrote Jenner as preface to this Case] the Cowpox shields the constitution from the Smallpox, and the Smallpox proves a protection against its own poison, yet it appears that the human body is again and again susceptible of the infectious matter of the Cowpox. In 1780, when attending to Horses with sore heels, Smith conveyed the equine infection to Cows, “and from the Cows it was communicated to Smith. In 1791, the Cowpox broke out at another farm where he then lived as a servant, and he became affected with it a second time; and in 1794 he was so unfortunate as to catch it again. The disease was equally as severe the second and third time as it was on the first.” He was twice inoculated with Smallpox in 1795, and exposed to Smallpox without effect. X.--SIMON NICHOLS, Farm Servant. In 1782 was employed in dressing the sore heels of Horses, and at the same time assisted in milking Cows, thereby infecting them and generating Smallpox. Changing his situation, he communicated the disease to other Cows, and was himself severely affected. Some years afterwards, he was inoculated with Smallpox by Jenner without effect. XI.--WILLIAM STINCHCOMB, Farm Servant. In 1782 had Cowpox severely on the same farm with Nichols. In 1792 he was inoculated with Smallpox along with a large party, but in his case without result. “During the sickening of some of his companions, their symptoms so strongly recalled to his mind his own state when sickening with the Cowpox, that he very pertinently remarked their striking similarity.” XII.--HESTER WALKLEY, Farm Servant.