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Show Tab. XLVIII. {Repyefenff an H'umane Brain, with it: Bafir upward, and die/(fled of the Dura and Pia Mater; the better to [hem the true Origination of the Nerves, andthc running of the Fibrer, laid open by Learned Dr. Ed. ward Tylou, in the Theater ofthe Collcdge of ‘Plafliciam in London. A A A A. " E ‘ H E four Lobes of the Brain, wherein the divifionofthc Anterior from the Pof'terior, as alfo the Anfiraétm in each, are more plainly reprefented [B Q. The Cerebellnm, and here the Circles which compofe it, are plainer and truer than in any Figure yet. C C. The edges ofthe Medullary part ofthe Brain, which lines the infides of the Ventricles which were here opened, only by fepararing the Membranes, and Blood-veffels, and gently dilating it with my Fingers, only at (c c r c. ) a fmall Incifion was made with the knife. D D. The Ventricles of the Brain. e ee e. Four large Blood-velfels on the infide of the Ventricles. F F. The Tunica, o‘r rPlest Coroider in its natural fituation, but a little expanded. g g g. The Carotide Arteries. b. The Infundibulum. ii. Two round protuberant Bodies which Dr. Willi/5 calls Glands, but are of the fame fubiiance with the Medullary part of the Brain. K K. The Crura Mcdullx oblongatae, compolbd of fevcral Fafciculi of nervous Fibres, which continued, makes the Siriaa in the Corpam Striata; between thefe Fafciculi, run fcveral Blood-veffels, which pierce them quite through. L L. The 01;!ch Medullaa ohlongam, whereby the Cerehtllmn is joyned to the Cerebrum, and is covered with feveral Fafticnlz' of Fibres, which make the 'Prfiltrheramz‘a mzrmlarir of Dr. I'Villir. M. The Mcdulla oblongata, fen Mcdullx Spinalia principium. This, as likewife the former body ( L L ) by Dr. Willie, are bath called Medullt oblongata 3 but I think there is great reafon to dil'tinguifli them, {ince Nature has {0 remarkably done it to our hands 5 for the Surface ofone is firiated, the other plain; the former is common to the Cert-brunt and Cerebellar"; the latter is conjoyned to neither of them, but im- mediately to the Caudex. N N. The Olfaétory, or firfi pair of Nerves, where it is obfervable. o 00 0. Its double Origination, not before remarked. 'P 'P. The Optic, or Second pair of Nerves. Q Q» Of the T/Jalami Here/0mm Opticorum. r r. The Motory, or Third pair of Nerves. .r r. The Pathetic, or Fourth pair of Nerves. t t. The Fifth pair of Nerves v 4v. The Sixth pair of Nerves. Iv w. The Auditory, or Seventh pair of Nerves, which are double. 9: x. j}. znrw at. The Tar vagum, or Eighth pair of Nerves. The accefiary Nerve, that runs to the Tar wagum, or Eighth pairThe Ninth pair of Nerves. The Tenth pair of Nerves. Tab. XLIX- WHIIMIIIIIHI IIF' IU' .411, I. |