( 228 ) 
rf'i ' y 
on the Ligament that ties the Fociles together, was 
not fo much oflified as that which 1 have de- 
fcribed. 
This Offification ( which is the compleateft of any 
I have yet heard of) was, no doubt, the Caufe of 
the Mortification, and of the Death of my Patient, 
which follow’d four Days after the Amputation , as 
Mr. Mitford inform’d me, being oblig’d to leave him 
the next Morning ; though I lliould have been curious, 
had I been prefent, to have feen how high the Ofii- 
fication reach’d. 
I muft obferve to you , That this bony Shell, or 
Lamina , was contain’d within the Tu nicies, or Coats 
of the Artery. I don’t doubt, but thefe Cafes are 
more common than we imagine. For when we fee 
Mortifications feize the Extremities of Aged People, 
which we commonly attribute to a Decay of Na- 
ture, or an Extin&ion of the Vital Warmth $ this, I 
believe, is often the Caufe. And I am the more in- 
' din’d to think fo, from two or three parallel Cafes 
I have been concern’d in, fmce I came into Tork- 
Jhire. 
I am, &c. 
Edward Naijh. . 
VIII. An 
