C 1 2 s 3 
ed are not fo, for he mentions his having examin- 
ed bodies in which they were wanting. 
But, fuppofing the utmoft in favour of thefe gan- 
ghd of the fifth pair: the nervous twigs on which 
they have been obferved are chiefly diftributed to 
the falivary and mucous glands, about the tongue, 
jaw, palate, throat, and nofirils, and therefore may 
be fuppofed to have fome ufe in glandular fecretion ; 
for we fee the glandular parts in the abdomen are 
fupplied by the intercojials as well as the mufcular 
fibres of the heart and intefiines. 
2. It has likewife been objected that the inter co - 
flah fend fome branches to parts under the controui 
of the will as the pharynx and diaphragm ; as well 
as to the heart and intefiines, not fubjed to that con- 
troui. 
It is well known that the pharynx has its mod 
confiderable fupply of nerves, from the eighth pair: 
and the diaphragm is rendered paralytic by tying or 
cutting the phrenic nerves diftributed to it, which 
fhews that its motions have very little if any depen- 
dance on the minute filaments, which it receives 
from the intercojials . The motions however of both 
thefe parts are properly fpeaking of the mixed kind, 
fometimes being voluntary , at other times involuntary : 
thus the diaphragm moves when we are afleep, as well 
as when we wake, and continues for fome time, even 
during a profound apopledic fit : and though we can 
raife the pharynx by an effort of the will, yet in the 
adion of deglutition its motions are chiefly involun- 
tary from the Jtimulus of the food, paffing down 
the gullet, as has been fhown in the moft ingenious 
* Haller, El. Phyf. T. IV.. 
R 2 
work. 
