p o Of the manifefi Signs I T is certain that the fine and exquifite Contexture of the nervous Syftem,and the A- greement and Confent of one Part with ano- ther, as well as the extraordinary Perfe&ion of the Animal Spirits, f^t as Guards over fuch fenfibie Parts, could not but be affe&ed with the Apprehenfions of Mifchief, and make and tremble s and ufe their Efforts to throw offthe Danger; and indeed I take it further to be probable, that the peftilential Poifon might be fhook by fuch Means out of the Nerves into the Miii r cles, and there caufe Tention, Trem- bling, Vellication, Yawning, Stretching, and all thofe other Concomitants of putrid and malignant Fevers. THE Duration alfo of this Shuddering was as uncertain as its Degree, for it went off fometimes foener, and at others later - 7 ibme- times in half an Hour, and at others, not till four Or five Hours j which difference I con- jecture owing to the Quantity and Intenfenefs of the Malignity, as to the greater or lefler Struggles of Nature to refill: it. A S foon as this Horror could be faid to terminate, for the molt commonly a Naufe- oufncfs and Pleaching fucceeded, from whence there
