NATURAL AND CASUAL COW-POX. 321 



;ml on her lips. A vesieo-pustule, when opened with a lancet, 

 di*rhari:ed like an abscess. 



In a letter to Mr. Badcock, dated April 3rd, 1845, Ceely referred 

 t> .mother now stock of lymph raised from a milker's hand. He 

 added : 



" In the enclosed lymph I see nothing unusually severe, except 

 on very thin skins; although the milker's hand exhibits now rough 

 ulcers, one on the hand deep enough to encase a bean." 



Recent discoveries of coiv-pox in England. After Ceely's cases in 

 1840-41, no cases of casual cow-pox on the hands of milkers were 

 recognised as such mid recorded in this country for nearly fifty years. 

 In the outbreak of cow-pox discovered by the author in December 

 1887, in Wiltshire, the disease was communicated to nearly all the 

 milkers. The reader is referred to the account of this outbreak, 

 which has already been given in the chapter on scarlet fever (p. 274). 



The author's researches were confirmed by Mr. Forty in 1888, 

 and Mr. Bucknill in 1895. 



In June 1888 Mr. Forty, in practice at Wotton-under-Edge, 

 Gloucestershire, reported to the Local Government Board, that at 

 a farm at Alderley, an eruptive disease on the udder and teats was 

 occurring amongst cows, and that the farmer's son, and other persons 

 engaged as milkers, had contracted an eruption like that of the cows. 

 The farmer's son had been under Mr. Forty's care suffering from an 

 eruption, ami circum-aiial piles. Mr. Forty had watched the course of 

 the eruption from papules to vesicles and scabbing, and concluded 

 that the eruption could not be distinguished from vaccinia. Klein 

 visited the farm, and found a number of cows with sores on the teats 

 and udders. The sores were of various si/.e-s and outline. mo>tlv 

 irregular, and covered with brown or black scabs. Those on the 

 teats were larger and more irregular than those on the udder. 

 Klein wa.* shown several milker* who had had soree on one or more 

 tinkers; one had had a had arm with swollen axillary gland-. 

 The farmer had al>o contracted the eruption: but in the-e peiv-on-. 

 only scabs were visible as the remnants of their >oiv>. 



A girl of about twenty had taken the place of an incapacitated 

 milker, and noticed a red pimple form on the dor>:l sm fan- of her 

 right thumb. Eight da\> afterward* tin re was a .*lightly n 

 circular ve-icle. with dark centre and pale periphery : the rent re of the 

 \esicle wa* slightlv depreed. It \va* ju-t under half an inch in 

 diameter; there was peripheral redne. but no marked an-ola. 

 irii-1 had three good vaccination mark*. 



Klein experimented on calve* with lymph from the vehicle and 



