[ i8 ° ] 
which are always detached from the principal cords 
below the Ganglions, and chiefly from the inferior 
cervical Ganglion. The few nervous cords from the 
par vagum or 8 pair, which in the human fubjed are 
fent towards the heart, are almoft totally fpread upon 
the pericardium and great veflels (/ ). 
In the abdomen this nerve unites with the par 
vagum of the right fide (g), and together form the 
great femi-lunar Ganglion ; from which, and from 
other Ganglions formed in inferior parts of the ab- 
domen, filaments are diftributed to tne inteftines, 
the liver, the fpleen, the kidneys ; and fome of them 
defeend to the Fallopian tubes, uterus, and other parts 
in the pelvis; fome of which are alfo in part furmlhed 
with filaments from the lumbar nerves. 
The heart and inteftines being wholely fupplied by 
nervous filaments detached below fome remarkable 
Ganglion, we muft inquire what is particular in the 
motions of thefe parts, or in their ftrudure: But the 
motions of the heart and inteftines are remarkable, 
and exadly analogous in being involuntary, or not 
liable to be either ftopped, renewed, or in any way 
controuled by the will. 
Tho’ it be very certain that thefe motions are ex- 
cited in the heart by the gentle ftimulus of the blood 
upon the infernal furface of that organ ; and in t le 
inteftines by that of the fecreted liquors, and ot the 
food taken in ; of which ftimuli thefe parts have the 
quickeft and mod exquifite perception : yet this being 
ordinarily not fo ftrong as to make us confcious 
of its a&ion, much lefs painfully io, can hardly be 
(/) Haller, Elcm. Phyf. T. i. p. 366. 
(jr) Window, Traitedes Nerfs, N°. 141. 
fuppofed 
