[ *97 1 
Cavity of the Bone, bur improperly called an Exfo- 
liation, as the Thicknefs of the Bone throughout was 
as thick as a Shilling: It was more fubftantial in 
fome Places than in others, and open'd here and 
there, fo as not to be a complete Tube. But what, 
perhaps, may be thought to deferve more notice is, 
that this loofe Bone, tho' it had for many Years been 
foaking in the Matter lodged in the Bone (which, at 
times, had worked its Way out, by perforating the 
Surface of the Os Humeri externally), yet this Ex- 
foliation was in no- wife alter'd, or tainted with Ca» 
riofity, as the main Bone was; but in every refped 
fo found, as to give Ground to hope the pofterior 
Part of the Os Humeri might be fo ; but it happen'd 
otherwife. 
Upon the Removal of this Exfoliation, the whole 
internal Surface of the Bone was found of a Sub- 
ftance like a Cartilage : It was bare in fome Places,, 
and cover'd with Flefh in others. The Flefh was fun- 
gous in the lower Extremity of the Bone that was 
carious; firmer towards its upper End, where it was 
found; and callous towards the Middle, which was 
degenerated into a cartilaginous Subftance. 
The Removal of this Exfoliation having laid open 
the whole Bone, in the inferior Part of it was found 
a Sinus leading into the Articulation with the Cubit, . 
and a Cariofity in the Bone there $ and, in the upper 
End, where the Bone appeared now found, but for- 
merly was diftemper'd, feveral Foramina , which 
were filled up with Flefh, under Cover of the Del- 
toid Mufcle. 
At this time the Surface of the Wound was very 
large, and the Difcharge from it greater than the 
7 Patient 
