Now all this may be attributed to the close affinity and relation betwixt the soul and the body intercommunicating their fortunes; but ‘tis quite another thing when the imagination works not only upon one’s own particular body, but upon that of others also. And as an infected body communicates its malady to those that approach or live near it, as we see in the plague, the smallpox, and sore eyes, that run through whole families and cities:--