f* «Y 
L r 5 1 
as the Mouth, Bladder, &c. when they ad without 
Reftraint; and therefore, iince thofe circular Fibres, 
which alone are to be call'd the Orbicularis , can only 
ad by purfing themfeives up round, they have no 
Share in Shutting the Eye, which is done by the 
bringing down of the upper Lid alone, as I have Laid 
already 5 and, confequently, only ferve to draw to- 
gether the Skin of the Face all round, doling up the 
Eye with more Violence, and at the fame time dis- 
torting the Face; for the Eye-lids are naturally (hut 
down, without the leaft Difcompofure of the Coum 
tenance 5 whereas this Motion of the Orbicularis is 
one of the Exprefllons of Pain and Anguifh $ or 
ufed to defend the Eyes from Duft, or the glaring 
Rays of the Sun when the Eyes are weak. 
XXIIL 
Another fhort Observation, worthy of Note, is, 
that no one can lift up the Eye-lids to their utinoft 
Height, without looking upwards, that is, without 
raifing up the 1 Pupil of the Eye at the fame time, 
except a particular Paffion urges the contrary ; becaufe 
the Mufcle which lifts up the Lid, when there is an 
Intent to raife it very high, draws the Mufculus at- 
tollenSy or Elevator of the Eye, into Confent, and 
makes it ad too ; for they both arife from Points 
that are very near each other 5 and the Aperiens Pal - 
pebram lies upon the Attollens , or Elevator of the 
Eye, in its whole Length. And this Confent be- 
tween them is reciprocals the foie Reafon for it be- 
ing, that, when there is a Neceffity of looking up at 
an Objed* the Lid fhould be pull'd up out of the 
Way. 
xxiii: 
