mmz&atlymt of them mo theMlowaad fiftulaus fibres, to 
be conveyed by a comirraed courfe into the fiibjacent parts 
to execute it's feveral offices , as is performed by the litclc 
Tubes or Pipes of Plants ? adding for the illuftration of the 
Original of the Spinal Marrow and the Nerves, tha-t that Marrow 
is a Bundle of Nerves > which whii'ft it makes up the Brain, 
divides it into two parts (by the circumvolutions of which 
the fides of the ventricles are formed ) and terminates at laft 
in the Cortex ? wherein , and in whofe Glandular grains the 
extreme roots of the Nerves, in the fmalleft fize, are im- 
planted. After this he proceeds to the ufe of the Cortex^ and 
is of opinion , that by thefe little Glanduls there are feparated 
and colle&ed thofe particles , which Nature has defign\j for 
Inftrumentsof Senfation,, and by which 3 when convey'd through 
the tubulous Nerves 0 the coherent parts are impregnated and 
fwell'd , and the Animal made fenfible of the operations of 
feveral Objedls. Moreover he advances fome confideration of 
his , upon the Learn 'd Dr. Willis's Opinion about the Pro- 
duction of the Internal Sencesby vertueof the Brains ftruciure^ 
and alfo upon his afcribing to xhofe Bodies , he cals (Iriata 
and radiofa, a twofold texture, whereof the one afcends, the 
other defcends, for the perception of the imprefftons of Sen- 
fible Objects by the former, and the performance of Motions 
by the latter, La/My > he takes notice that the famous Dr. 
Gliffcn hnh derived the matter of the Nervous Iujce through 
the nerves into the Brain, from the Glanduls cf the Mefente- 
rj% and Fortius, from the Mouth and we [tins $ whereas, 
fince he has obferved the MafTe of the Brain made up only 
of a Glandular Cortejc^md of Fibres proceeding from thence, 
together with the fanguineous ve{Tels 5 and not yet found any 
cavities for receiving the Chyle, and conveying it into every 
part of the Brainy he therefore conceives., that all the Nerves are 
produced Out of the Brain and the Cerabellum^ for this end, 
that they may carry down the juice feparated in the very 
Glanduls 5 there wanting no fanguineous vefTels, by which both 
fufficient matter may be furnirtic, and the refidue of the per- 
colated luyce carrfd away again. 
Concerning the KUncjs, he firfi relates , what hath been taught of 
jf&etn hitherto : ii&mn delivers both his own ohfervations about them , 
