As there is often Antipathy of the Parts of a Human Creature, to Forrein Objects; so there are often Sympathetical Effects produced from Forrein Objects, with the Parts of a Human Creature. As for example, A timely, kind, and discreet Discourse from a Friend, will compose or quiet his troubled Mind: Likewise, an untimely, unkind, hasty, malicious, false, or sudden Discourse, will often disorder a well-temper'd, or Regular Mind, the Mind imitating the smooth or harsh strains of the Object: and the same Effects hath Musick, on the Minds of many Human Creatures. CHAP. XXVII. Of CONTEMPLATION. Human _Contemplation_, is a Conversation amongst some of the Rational Parts of the Human Mind; which Parts, not regarding present Objects, move either in devout Notions, or vain Fancies, Remembrances, Inventions, Contrivancies, Designs, or the like. But the question is, Whether the Sensitive Parts of a Human Society, do, at any time, Contemplate? I answer, That some of the Sensitive Parts are so sociable, that they are, for the most part, agreeable to the Rational: for, in deep Contemplations, some of the Sensitive Parts do not take notice of Forrein Objects, but of the Rational Actions. Also, if the Contemplations be in devout Notions, the Sensitive Parts express Devotion by their Actions, as I have formerly mentioned. Also, when the Rational Parts move in Actions of Desire, straight the Sensitive move in Sympathetical Appetites: Wherefore, if the Society be Regular, the Sensitive and Rational Parts are agreeable and sociable. CHAP. XXVIII. Of Injecting of the Blood of one Animal, into the Veins of another Animal. To put Blood of one Animal, into another Animal; as for example, Some Ounces of Blood taken, by some Art, out of a Dogg's Veins, and, by some Art, put into a Man's Veins, may very easily be done by _Injection_; and certainly, may as readily convert it self to the Nature of Human Blood, as Roots, Herbs, Fruit, and the like Food; and probably, will more aptly be transformed into Human Flesh, than Hogg's Blood, mixt with many Ingredients, and then put into Gutts, and boyled, (an ordinary Food amongst Country People;) but Blood being a loose Humourish Part, may encrease or diminish, as the other Humors, viz. _Flegm, Choler_, and _Melancholy_, are apt to do. But this is to be observed, That by reason Blood is the most flowing Humor, and of much more, or greater quantity than all the rest of the Humours, it is apt (if Regular) to cause, not only more frequent, but a more general Disturbance. The Eleventh Part. CHAP. I. Of the different Knowledges, in different Kinds and Sorts of Creatures.