( 3 l8 ) 
# 
EXPERIMENT IL 
With the fame fiat Button-end of the Probe, I 
pufhed (lightly towards the Brain in the Head, upon 
that End of the Medulla Oblongata appearing in the 
occipital Hole of the Skull ; upon which the Eyes 
were convulfed. This alfo I repeated feveral times, 
on the fame Head, with the fame Effed. 
E XP E RIME NT HI. 
I tied a Piece of fine Twine, or Thread, parallel to 
the crural Artery, Vein and Nerve of a Dog^ and 
made a Ligature on them, and on the Parallel Twine, 
above and below, at theDiftance of about four Inches * 
then I cut beyond the Ligatures above and below, fo as 
to take out the Veffels and Nerve, together with the pa- 
rallel Twine, in one Bundle j and laying them on a 
Board, both the Artery and Vein contraded immediate. 
ly,and were fhortned to almoft one half of the natural 
Length which they had in the Body •, to wit, to two 
Inches and a half j whereas the Nerve remained uncon- 
traded, at its natural Length, and commenfurated to 
the parallel Twine of four Inches, as before it was cut 
out of the Body, according to the annexed Figure. 
I II I "" i 
I 2 3 4 
The Nerve and Twine at their natural Length. 
* 1 1 Inches. 
1 2 
The Artery and Vein contracted. 
By 
