84 Tbe Art of Farriery 



quick Motion in the Animal Spirits, either by 

 retarding or flopping their progrelTive Motion, or 

 by caufmg an Undulation. If to thefe be added, 

 that the Animal Spirits muil be confined within 

 their own proper Channels, as well as the other 

 Fluids of the Body, the many Hypothefes contrived 



Ti'i.WnUs's by Dr. Willis and others, ipjuII needs come to 



Hypothehs nothing. 



cenivired. rj.^^ Nervous Fluid or Animal Spirits, undoubt- 

 edly, connil of (by f^r) the fmallell Particles in the 

 Blood, as appears by the Minutenefs or Smallnefs of 

 their fecerning or feparating Glands -, and therefore, 

 they not being formed by the Cohefion of other Par- 

 ticles, might have been feparated any where, or in 

 any Pari; of the Body. Yet the Animal (Economy 

 receives a great Advantage by the diibnt Situation 

 of the Brain from the Heart ; for, if this had been 

 placed nearer, and received the Blood, before 'twrs 

 divided into its fmallell Particles by the Force of the 

 Air in the Lungs, fuch Particles might have enter'd 

 the Glands, arid afterwards cohering to one another, 

 might have obllruded fuch extremely narrow Chan- 

 nels. 



Now, the Brain being placed at fuch a Dillance, 

 the Particles ( that by their attraftive Power form 

 Corpufcles ) will have fufficient Time to coalefce or 

 grow together, and their Magnitude v/ill hinder 

 their entering the Glands : For if it fhould happen 

 that thefe Particles fhould enter the Glands, aixl 

 there unite together, they would then obilruft the 

 Paffage to the Nerves, and produce Apoplexies, 

 Palfies, ^c. the Particles of which the Animal 

 Spirits confift, being of fuch an extreme Finenefs, 

 that their Quantity can bear but a fmall Proportion 

 to the other Fluids in the Blood, and confequently 



The true xhtre vs-as a Neceffity of a prodigious Number of 

 the Bulk of^^^^"^^ ^^ feparate them from it; and this is the 

 the Biain. true Reafon of the great Bulk of the Brain. 



There is no manner of Doubt, but Horfes are 



fubje^^ to Nervous Diforders, yet not, by far, fo 



E 5 much 



