C 7m) 
5. Tn Singing Birds the Srudure of thefe paflages is 
like that of the Parrot and Paroquet*, only that the Pil- 
lars and LamimUzrt lefs than they (hould (eem to be 
in proportion to the Heads. From whence h is proba- 
ble, that thefe Birds are by this Structure enabled to di- 
ftinguifli Sounds and Notes, and alfo imitate them bet- 
ter, having a more mufical Ear. 
6. In the Heads of Pullets, Geefe and Ducks I found 
only the firft delcrib'd palTage diftin&Iy, but in Pluvers, 
Buftards, and Tome other, I found another that went 
over the Sinus Lateralis of the Brain from Ear to Ear. 
This feems to be defignd to make them more watchful 
■ than Domeftick Fowl, or yet thc^fe that live much on 
the Water, becaufe they are liable to a great many Dan- 
gers that the others are exempt from. Note, that there 
are for the molt part great varieties in the Stru&ures of 
all Fowls Heads. 
7. In the Ears of all the Fowl that! could examine, I; 
never found any more than one Bone and a Cartilage, 
making a Joint with it that was eafily moveable. The 
Cartilage had generally an Epiphtfe or two, one on each 
fide, which were very flexible, as it felf was. The Bone 
was fmall and very hard, having at the end of it a broad 
Plate of the fame Subflanee very thin, upon which it 
refled as on its Bafs. I got that of a Pullets Ear, re- 
prefented in Fig. 4. where 4 is the main Cartilage, and 
I b the two Epiphyfes, c the fmall Bone, and d the 
Bafts or broad end of it. Note, that in the Figure, part 
of the Drum flicking to it is reprefinted together with 
the Cartilages, 
8. I obftrv'd three pair of Nerves in all the broad 
bill'd Birds that I could meet with, and in all fuch as 
feel for their Food out of their fight, as Snites^ Wood- 
cocks, Curlews, Geefe, Ducks, Teale, Widgeon, &c. Thefe 
Nerves are very large, equalling almoft the Optick Nerve 
in thicknefs ; they begin a. little more forward than the 
