C J'7 ] 
ther it has been often demonftrated, or rightly under- 
ftood. This Membrane, however, I have raifcd in 
pretty large Pieces after macerating; and find it to 
be a Continuation of that fine, fmooth Membrane 
that lines the capfular Ligament, folded over the End 
of the Bone from where that Ligament is inferted. 
On the Neck of the Bone, or between the Infcrtion 
of the Ligament, and Border of the Cartilage, it is very 
eonfpicuous, and may be pulled up with a Pair of 
Pincers ; but where it covers the Cartilage, it coheres 
to it fo clofely, that it is not to be traced in the 
recent Subject without great Care and Delicacy. In 
this Particular it refcmbles that Membrane which is 
common to the Eye-lids and the Fore-part of the 
Eye-ball, and which is loofely conncded with the 
Albuginea , , but ftrongly attached to the Cornea. 
From this Defcription it is plain, that every Joint 
is invefted with a Membrane, which forms a com- 
plete Bag, and gives a Covering to every thW 
within the Articulation, in the fame Manner as the 
‘Peritoneum invefts not only the Parietes , but the 
Contents of the Abdomen. 
The Blood-vefiels are fo fmall, that they do not 
admit the red Globules of the Blood ; fo that they 
remained in a great meafure unknown, till the Art 
of filling the vafcular Syflem with a liquid Wax 
brought them to Light. Nor even by this Method 
are we able, in adult Subjeds, to demonftrate the 
. Veflels of the true cartilaginous Subftance; the Far, 
Glands, and Ligaments, (hall be red with injected* 
Veflels, while not one coloured Speck appears upon 
the Cartilage i tic If. In very young Subjeds, after a 
fubtle Injedion, they arc very obvious 5 and 1 have 
found 
