S6 The Jnatomy of a UOKSE, Chap. IV. 



rowly, that the Learner may be the more fully inllrudted 

 in the Knowledge of that, which in all Animal Bodies is 

 fo abfolutely neceilary and eilential to Life and Motion. 

 In order to which, I fliall follow the ufaal Method of Dif- 

 fedlion, beginning with its Underfide, having already taken 

 a general Survey of the v^hole._ 



The lirft thing, which is the moft obfer- 

 ^h Rete Mira- ^.^i^j^ ^j^ ^i^^^ f^^g^ jg ^j^g ^^^^ ?jiirabile fpread 



^ * all over the Bottom of the Brain, and is a 



curious Net- work of Blood-velTels form'd out of the fmall 

 Twigs which fpring from the largeft Branches of the Caro- 

 tid and Cervical Arteries, having palled through the Skull 

 hy proper Holes in the Bones of the Temples. Thefe Vef- 

 fels are the more adapted and fitted to the Nourifhment of 

 the Brain, as they are thus interwoven one with another, by 

 ■which Means the Blood takes a much longer Stay than if 

 they obferv'd a more ftreight and equal Diredion. 

 -, p. J , The GlanduJa Pituitaria is the next 



Pituitark thing obfervable : Towards the Bottom of 



the Brain it is inclofed within the Mem- 

 branes, and feated in a fmall Cavity in the Os cuneiforme^ or 

 Wedge-like Bone, appointed by Nature for that Purpofe, 



It has a Conduit called the Infundibulum^ox 

 ^e Infundi- Funnel, which conveys the Excrements of 



tomifls have believed there was a Pallage from it to the 

 Nofe : But later Enquiries have difcover'd two fmall Duds 

 which it fends off to the Jugular Veins ; fo that fome are 

 of Opinion, it is again mixed with the Blood. This Fun- 

 nel, or hifundihuliim^ is faid to take its Rife from the fore- 

 part of the third Ventricle, into which this Moilture feems 

 to be firil feparated, and is only conveyed by it to the 

 Gland above- mentioned, where it probably undergoes ano- 

 ther Degree of Refinement, that it may be the better adap- 

 ted to the Purpofes of Nature. 



Anatomifts have, it feems, been very much puzzled to 

 find proper Refemblances for leveral Parts of the Brain, hav- 

 ing diftinguifli'd fome of them by the Name 

 and r'ftes of AW.", or Buttocks, and others by that of 



e es. Tefles^ or Stones. Thefe come next under 

 our Confideration ; they are four orbicular or round Promi- 

 nences, which jet out from the Medulla oblongata, or Be- 

 ginning of the Spinal Marrow 5 the two firlt, to wit, the 

 Buttocks, being the largeft, and the two Stones, which are 

 lelTer, being only Appendfiges tg them, The 



