Chap. IV. The Anatomy of a HORSE. 3 7 



The Corpora Striata^ fo call'd from their ^-^^ Corpora 

 being llreak'd or chamfer'd,are only the Ends Striata, 

 of the two Thighs, which proceed from the 

 Buttocks ; by thefe the A4eduUa oblongata adheres to the 

 Brain, as has been oblerved ; and by the Nates and Tejies 

 above defcribed, it adheres to the Cerebellum or Brainlct. 



Between the Buttocks is placed that noted cj-f^^ Glandula 

 Gland, caird the Glandula piuealis^ and has pincaliV 

 been thought by fome Philofophers to be the 

 Seat of the Soul, tho' modern Anatomifts have fo far de^ 

 graded it, as to make it only the Penis or Yard of the Brain, 

 both on Account of its Situation, and probably as its Teems 

 to be of no other ufe but to feparate a liule clear Lympha 

 from the Arterial Blood. 



Between the Buttocks, and near this little ^^^ p^^^^ 

 Gland, there is a fmall Chink, to which 

 fome have grv^en the Name of Anus^ or A.rfe, others have 

 called it the Vulva : whether it has obtained this Appellation 

 in Derifion of the other, is not material. 



As for the Ventricles of the Brain, which by ^^^ ventricles ' 

 fome have been reckon'd four, by fome three, 

 and by others but one ; I fhall not trouble the Reader about 

 the Number, but only take Notice, that they are fituated 

 in the middle of the Bram, reaching forv/ards towards the 

 Nofe, and downwards towards its Bottom, in Shape of a 

 Half-moon. The ufe of thefe Ventricles is, according to 

 the lateft Enquiries in Anatomy, to ferve as a Receptacle 

 for that Portion of the Serii?n which is feparated from the 

 glandulous Skin that invelts them, and from the Glandula 

 pituitaria^ and is thought to be again imbibed by the Veins, 

 and by them conduced afrefh into the Mafs of Blood. They 

 are likewife thought of ufe to give a free PafTage to the 

 Blood in thofe Channels call'd the Plexus cboroideSj that run 

 along their Sides, which probably might be too much com- 

 prefsM by the great V/eight of the Brain, had not Nature 

 found out that free and eafy Situation for them. 



Befides thofe Parts already defcribed, ^^^ Fornix 

 there are to be found in the Brain the For- 

 nix^ the Septum lucidum^ and the Corpus calkfum,. 



We have already taken Notice of the Ccrpiis calkfum^ 

 as being the inner Subltance of the Braia, which is diilin- 

 guifli'd from the cortical Part that involves it by its White? 

 nefs, ^c. The Septum lucidiim is only that Partition which 

 divides the Ventricles j and the Fornix: is a kind of Vaults 

 f D 3 or 



