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The Third BOOK. Of the Anatomy of MANS BODY. (Book 3)
I Following the custom and the manner of such as before me have written of Anato∣my, will first, (that I may make the minds of the Readers more attentive had desirous of these studies) declare how necessary it is, and also how profitable; and then shew the order to be observed in it, before I come to the particular description of Man's body.
Furthermore how Anatomy may be defined, and the manner of the definition of the parts.* 1.1 For the first, the knowledg of Anatomy seems in my judgment very necessary to those that de∣sire to excel, or attain to perfection of Physick; that is, whereby they may be able to preserve the present health of the body, and the parts thereof, and drive away diseases. For how can ei∣ther Physitian or Chirurgeon preserve health by the use of the like things, which consists in the temperament, conformation, and natural union of the parts; or expel the disease which hurts those three, by the like use of their contraries, unless he shall know the nature and composure of the body, and understand, as by the rule of this knowledg, how much it swerves from the nature thereof? Wherefore it is excellently said of Hippocrates; that the Physitian,* 1.2 called to cure the sick Patient, ought diligently to consider, whether those things that are in him, or appear to be in him, be like or unlike, that is, whether the Patient be like himself and his own nature in all his parts and functions, temperature, composure and union; that he may preserve those which are yet contained in the bounds of nature, and restore those that are gone astray.* 1.3 Which thing Galen hath also confirmed, specially where he saith, He must well know the nature and structure or composure of the bones, who takes upon him to restore them broken or dislocated to themselves and their proper seats or places. Moreover seeing that healing doth not only consist in the know∣ledg of the disease, but as well in prescribing fit medicines and like application of them to the bo∣dy and the parts thereof, all which by their natural dissimilitude, do require unlike medicines,* 1.4 ac∣cording to Galens opinion: I prethe tell me, Who can perform this, which is ignorant of the de∣scription of the whole and the parts thereof, taught by Anatomy? We may say the like of the A∣pothecary, who ignorant of the situation of the parts in the body cannot apply Emplaisters, Oint∣ments, Cataplasms, Fomentations, Epithemes, bags to the fit places, as to the sutures of the skull,* 1.5 to the Heart, Liver, Stomach, Spleen, Reins, Womb, or Bladder. For example: let us imagine the Li∣ver to be troubled with a hot distemperatvre, but on the contrary, the stomach with a cold (which commonly happens, seeing the Liver hotter than ought to be, sends up many vapours to the head; from whence cold humors fall into the stomach) if hot things to be applyed to the stomach by the Physitians prescription, be by the Apothecary, making no difference, applyed, to both the stomach and neighbouring Liver (which may chance, if he be ignorant, that the stomach bends somewhat to the left side under the breast-blade; but the liver so takes up the right side of the body, that with a great part thereof, it covers almost all the stomach) will not he much offend by increasing the hot distemper of the liver, and not thereby giving ease, or help to the disease? Shall not, by this his ignorance, the Patient be frustrated of his desire the Physitian of his intent, and the medicine of its effect? By these examples I think it most manifest, that the Anatomical knowledg of the parts of the body is exceeding necessary to all Physitians, Chirurgeons, and Apothecaries, who will practise Physick with any praise to the glory of God, and the benefit and good of man, for whose sake we have writ these things, and illustrated them by figures, subjecting the parts to the eye, and fitly put them in their proper places.
But Anatomy is commodious four manner of ways; The first is,* 1.6 because thus we are led to the knowledg of God the Creator, as by the effect to the cause; for, as we read in St. Paul, The invi∣sible things of God are made manifest by the visible. The second is, that by means hereof we know the nature of mans body, and the parts thereof, whereby we may more easily and certainly judge and determ••n of sickness and health. The third is, that by the knowledg of the body and its parts, and together therewith its affections and diseases, we may prognosticate what is to come, and fore∣tell the events of diseases. Lastly, the fourth is, that, considering the nature of the diseased part, we may fitly prescribe medicines, and apply them in their due place.
Now we must declare in what order Anatomy may be fitly delivered; but first we must observe,* 1.7 there is a threefold Method; The first is called of Composition, being very commodious for the teaching of Arts, which Aristotle hath used in his Works of Logick, and natural Philosophy, the order and beginning taken from the least and most simple to the more compound. The second of Division, fit for the inventing or finding out of Sciences. Galen hath followed this order in his Books of Anatomical Administrations, and of the use of the parts. The third of Definition, which sheweth the nature and essence of things, as appears by Galen in his Book De Arte P••rva. And because this order doth also prosecute the divisions, therefore it is commonly ac∣customed to be comprehended in the compass of the second. Therefore I will follow this in my