An inquiry how to prevent the small-pox. And proceedings of a society for promoting general inoculation at stated periods, and preventing the natural small-pox, in Chester / by John Haygarth.

  • Haygarth, John, 1740-1827.
Date:
1784
Catalogue details

Licence: Public Domain Mark

Credit: An inquiry how to prevent the small-pox. And proceedings of a society for promoting general inoculation at stated periods, and preventing the natural small-pox, in Chester / by John Haygarth. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

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    in the moft infe6lious ftate of the con- fluent fma'l-pox, immediately ifluing from the puftules. However, I would by no means maintain, that air is ne- ver fuperfaturated, and confequently rendered vifible, by variolous miafms. 3. If a folvend be put into a lefs quantity of menftruum than can dif- folve it, after fully faturating the men- ftruum, the remaining folvend conti- nues unchanged, and capable of im- pregnating a larger proportion of men- ftruum. In like manner, when the variolous poifon is put into a fmall portion of air only, it continues capa- ble of impregnating more air, and a part of the poifon remains undiffolved. Thus inoculators keep variolous pus clofe corked up in fmall phials, that the air may not diffolve all the infec- tion contained in it, I have feen the variolous pus remain, in a clofe corked phial, in a half fluid ftate, for feveral months,