OCR Text |
Show Tab.LXlI. Fig. I. The Brain of o Thornebock taken out of the Skull, ZM 52, - He Brain of a. Thorneback fomewhat refembleth that of a Skalt, and is made up of four pair of ProcefTes. / W ‘ h: a, The firfl: pair of Protuberancies Jr are the greatefi of all, and may he ' ' called Tyriform, as they refemble 3. Fear in Figure, and terminating in the Olfaétory‘ as in Stalks. _ ‘ . $er t .1- 17 I). The fecond pair of ProchTes l' are the {mallet}, and feem to tell-nu ble a triangular Figure, confilting in unequal fides. Jr cc. The third pair of Protuberancies 1- are endued with a {hort OYal {ha e. + d d. Tli'e fourth pair of ProceITes Jr are adorned with an oblong oral Fi ure. 'l‘ ee. The fifth pair 'f- belonging to the (n'ebellum, beginningmorelarge, and end in more {mall Dimenfions, and in fome fort are endued with a pyramidal Figure. The Cerebellum is encompaffed on each fide in lbme fort, after the man- +ffff. ner ofa Skait, with Proeeffes + refembling Intefiines, or the Anfi-atffm of at Humane Brain. 1- ggg g. Lalt of all, the Medulla Spinalz': + appears ( garnifhcd on each 1' G G. fide with numerous Nerves 13) and parth in the middle by theme+ h b. diation of a Fiffure 1' dividing the Med/(Ila Spine/it, as into equal portions. Tiiii. The Nerves of the Eyes + are double, as confining of two pair, the one Motory, the other Optick, and atife out of the tides of the M'edullo oblongam. ' r]- kkThe Oll'aétory Nerves + feem to arife out of the Apices of the Pyriform Proceffes, and make their ptogrefs obliquely crols-Waysg and near their Terminations, are trimmed on each fide with many fmall Fibres (cover- "51111 1. ed with a black Tunicle Jr) the immediate inflrument of Smelling. Fig. 2. The lower Region of the Organ of Smelling in a Skait. "f a a. The Organ of Smelling ‘l' in this Filh, is much more confpicuous in the lower Region (endued with a Concave Surface) in which the + I) b. nervous Fibrils, + fprouting out of the Trunk of the Olfaétory Nerves may be more clearly feen, running in tranfverfe parallel lines. Fig 3. 0f the upper Region of the Brain of a King/toll. _ The upper Region of the Brain of a Kingfion confifieth in three pm .1- a a. of Proceffes; The firfl pair T (much refemble thofeof a Skait and Thornback) as adorned with a Pyriform Figure : The fecond pan" +1212. of Prominencics Jr, are drefled with a kind of Oval {hapet The the third pair are graced with the Figure of Mamilltc, and thereupon 4- c L‘. may be called Mammillary Procefl'es v1». The Mcdollzz Spinali; in this Fifh is very remarkable, as being doublc :{e d d. in its Origen. The interior or middle 1» is parth into equal parts by a finall Fiirure, and is much lefs then the other to which it 13 1" e e. united after an Inch or more. The outward Illedul/o Spimzlz'r at firfi is divided from the Interior by i- ff. double Fiffure .1. pafliug on each fitle, and parting the external Mcd‘d'l‘ Spirmlia into equal portions. Fig. 4. The lower Region of Ibo Brain of a 1(1):er7 on. . Thelower Region of the Brain of a Kingfion is very like to tilCUPPCrv 1‘1 number, lhape, and file of Procelies, which is very rare in other Filli. Tab. LX111. - ‘ i , K. 37 T?" >, MINI"), ll] I h it -a |