whereas in Men, Quadrqpedes, and feme Amphibious 
Tilh, there are always two, one on .each fide below the 
entrance of the Noftrils into the Pallat, and opening to- 
wards the Noftrils, for the more convenient reception of 
Air, as is fupf ofed. This Paflage in ¥owi is exadly in 
the middle of the Pallat, below the entrance of the 
Noftrils into it: It is a membranous Tube, capable of 
admitting a Ravens, if not a Goofe Quill in larger FowJ, 
fuchas Turkeys, Geefe, &c. and reaches backward as 
far as the Communication Irom Ear to Ear, and hence it 
comes to fcrve both ; whereas there is a nece/Tity of 
two 4n thofe Animals, whofe Ears do not communi- 
cate. 
2. I have purpofely examined the Heads of all the 
Species of Fowl I could procure, and conftantly found 
a hollow fpace between the two Tables between the Os 
Cuneiforme reaching from Ear to Ear, and as far forward 
as the aforefaid common Aquaduftmpx rather DuftusAe- 
reus, the contrivance of it feeming more to favour this 
than the former ufe. This Cavity in all Fowl (as far as I 
haveobferv'd) reaches above xhzLahyrinthuson each fide, 
fo that whatever impulfe is made on the Tympanum on 
the one fide, may not only be very readily communica- 
ted by means of the internal Air to the Lahyrinthus of 
the fame, but alfb to that of the oppofite fide. Hence 
probably proceeds the quicknefs of Hearing and Vigi- 
lancy of Fowl, notwithstanding their wanting a Cochlea, 
thedefe&of which feems to be by this Structure more 
than fuppiied, no other Creatures that we know of ha- 
ving any thing of it. Ft is not improbable that the op* 
pofite Ear to a Sound is altogether as much affeited by 
it as that next it, if not more. There are feveral La - 
minula and Pillars of hard Bone between the two Ta- 
bles in thefe Caveties, defigned, as may be fuppofed, 
partly for their Maintenance at a convenient diftance, 
and partly for breaking of the Air, fo as to hinder Ec- 
choes 
