The membrane covering the bony roundness of the head outwardly is called PERIKRANION by the Greeks, and it is hard, thick and firm, and conforms in substance to the exterior covering of the brain which is commonly called the dura mater. The covering of the dura mater hangs affixed to the pericranium, so it seemed to nature, lest in contact it have an effect on the brain; under this covering a thin and soft membrane, which is called the pia mater, sprinkled with numerous veins, envelops and nourishes the brain. It is continuous to the dura mater and the substance of the brain, and it penetrates the ventricles of the brain. Hence the brain displays itself very clearly to the eyes, both its ventricles and the cerebellum placed at the rear of the head from which the medulla descends into the vertebrae of the spine. Here the reticular plexus (commonly called the _rete mirabile_), woven together from numerous slender threads of veins and arteries at the summit of the cerebellum, displays its _phantasia_; in it the vital spirit carried upward from the heart through the arteries, having been fully concocted and rarefied, becomes animal spirit, the cause of sensation and motion in the whole body. For the brain is the source of the nerves, but the nerves are the vessels which distribute animal spirit;[31] from the medulla of the spine (it is called _nucha_ by the Barbarians) they are distributed to all parts of the body. Furthermore, there extend from the brain seven pairs of nerves.[32] Two nerves look forward to the nares,[33] the olfactory organs. Two are carried to the eyes,[34] intersecting in their course, from whence comes the faculty of vision. Another two [carry] motion to the eyes,[35] another two give motion and taste to the tongue.[36] From two the stomach acquires sensation[37] so that appetite may not be lacking to it, and from as many slender nerves the palate distinguishes flavours.[38] Finally, from a single origin one nerve is extended on each side, provided for the right and for the left ear lest they be struck by deafness.[39] These things which have been said by me briefly regarding the animal members, within the proposed limits, end this introduction to anatomy. Other matters which pertain to this subject I shall discuss in another work where we shall adapt the discourse to all aspects of anatomy. Printed by Rob. Redman in London M.D.XXXII With Privilege Footnotes [1]The term _mirach_ means the anterior abdominal wall, but here Edwardes refers to the abdominal wall as venter. Lower venter proper means the abdomen or abdominal cavity together with the pelvis. [2]There is confusion here for, of course, the skin of the body is most sensitive. The subcutaneous tissues, on the other hand, are relatively insensitive.