the Flying Fijh. 793 
become fomewhat hollow towards the body, and a little 
convex outwardly at the broadeft part; but towards 
the gills the edge of the bone on each fide is turned 
outward, like the cape of a garment, to form a fmooth 
furface for them, and at the fame time to give lodgement 
to a ftrong mufcle under it, which fills the whole fpace, 
on the fuperior part of the bone; for on the pofterior 
part of it the articulation is made with the wing. 
Juft above the joint the fcapula is fmooth and hol- 
lowed, in the manner of a crefcent, to allow a tendon to 
pafs from a fmall mufcle w'hich lies on the inferior part 
of it, next to the body of the fifh. 
The upper part of the ridge that forms the joint, and 
is received by, or articulated with the wing, is rounded 
and fomewhat enlarged, over which the ftrong tendon, 
bound down by a ligament, together with fome fibres 
of the mufcle lodged under the inverted edge of the 
bone, is obliged to pafs, and, going over the joint, is in- 
ferted into the root of the ftrongeft and uppermoft pi- 
nion; near to which place, the tendon, palling in the 
femi-lunated part of the fcapula before mentioned as 
over a pulley, is alfo inferted a little way beyond the 
joint. 
By the action of thefe two mufcles, pulling in oppo- 
lite directions, though both upwardly, at the fame time 
Vol. LXVIII. SF that 
