AS for that Opinion of the famous Kircher, about animated Worms, I must confess I never could come at any such
Discovery with the Help of the best Glasses, nor ever found the same discovered by any other; but perhaps in our cloudy Island we are not so sharp-sighted as in the serene Air of Italy; and with Submission to so great a Name, it seems to me very disconsonant to Reason, that such a pestilential Seminium, which is both of a nitrous and poisonous Nature, should produce a living Creature.
AS in putrid Fevers, so in a Pestilence, Malignity is a Destroyer of Insects, and frightens them away as it were alive, so far is it from giving Birth to them; indeed in some malignant Ulcers and Cancers, and in the Blood of some People, sometimes animalcula are found; which is rather to be looked upon as the Effect of some Fault in the nutritious Juice, than the Produce of any Poison; and therefore they are not to be accounted amongst the Causes of a Pestilence.
SECTION III.
Of the primary Seat of a Pestilence; where,
by the Way, is considered the Nature of
the Spirits, and their Infection in an
humane Body from Poison.
IN Order to put an End to the Controversies about the Seat of a Pestilence, which have from Antiquity even to this Day been warmly maintained, many Authors putting the Heart for the Principle of Life and Death, some the Brain, and others the Stomach, Lungs, or Liver: It will be necessary here to discover the immediate Residence of the pestilential Seminium. Since therefore the above-mentioned Aura, according to Hypothesis, is very subtile and spirituous, for that Reason there must necessarily be some conformable Property in the Matter which is fit to receive it; as therefore there is not in the whole humane Machine any Subject more apposite, and capable of its Union, than the animal Spirits, we must fix its Residence there. But because I am sensible what Objections this Opinion lies open to, with some Persons, who may not conceive how an immediate
Infection of the Spirits is communicable to the Viscera, and all Parts of the Body, it will be necessary to go thro’ this Matter in a very particular Manner, by enquiring;
FIRST, What are the Spirits concerning which we are here speaking?