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On Dec. 27, 1928, when the temperature was around freezing, I was driving in a closed car with a chauffeur who, aftert half an hour's driving began to exercise his right hand as if it were asleep or otherwise uncomfortable. He finally called my attention to it, and said that he always had the same trouble with the one finger when his hand became cold. To my surprise, I found that there was extreme ischeischemiah finger of the right hand. The finger was almost dead white, with no evidence of circulation when pressure was exerted on the nail. All of the other fingers were normal in appearance;they were slightly pink, and the circulationormal. We drove for more than an hour in the cold after he called my attention to the finger, and the condition remained unchanged. He was driving without gloves, and he repeatedly put his finger in his mouth
William Allen Pusey. ISCHEMIA OF ONE FINGER. Arch Derm Syphilol. 1929;19(3):467. doi:10.1001/archderm.1929.02380210122011