[ 43 ] 
exfoliated, or even before it had begun to loofen. 
This ofTeous matter could not proceed from the Jca- 
pula^ the glenoid cavity of that bone not being di- 
verted of its cartilage j could it then poffibly efcape 
from the end of the found bone, before the morbid 
part had begun to feparate from it ? or are there any 
vertels that could convey the bony matter, and depofit 
it in the place of what had been removed * ? Thefe 
are points that 1 will not pretend to decide abfolutely, 
but 1 am much inclined to the latter opinion 
* Mr. Gooch, in his volume of Cafes and Pradtical Remarks, 
relating the cafe of a compound fraeSfure of the leg, where a very 
confiderable portion of the was fawed off, fays, “ In about 
“ three weeks I was fenfible, as were alfo feveral furgeons whom 
“ curiofity led to fee fo uncommon a cafe, that the fubflance 
which grew in the fpace of five inches entirely void of bone, 
“ had acquired in the middle only a greater degree of folidity 
“ than flelb j which circumftance not agreeing with the general 
“ received notion of the generation of callus^ we proved beyond 
“ difpute, with a fharp pointed inftrument, and weobferved that 
“ the offification was gradually formed from that central point, 
which was confiderably advanced before any exfoliation was 
call: off the ends of the divided bone. In lefs than four 
“ months, the whole fpace was fo well fupplied with the callus^ 
“ or rather new bone, that he was able to raife his leg when the 
“ bandage was ofF, without its bending.” 
Caps and Remarks^ new Edit. p. 287. 
f In univerfum in fanguine materies eft apta producendo ofli, 
quae adeo frequenter in cellulofuin fpatium intiinum, interque 
convexam fuperficiem membranae Intimae arteriarum, concavam- 
que membranae mufculofae extremitatem eftunditur, et cafeofa 
primo, inde callofa, quafi coriacea, demum ofi'eae fquamae fit fi- 
millima. 
Hallcri Elem. Phyfiolog. tom. VIII. p. 316. 
— Calli in oflibus non fraifuras folas, fed amifia integra 
ofla farcientes, fiunt ex liquido glutinofo, pulfu proximarum ar- 
teriarum compa£Io, he. Halleri Primae Lineae, p. 148. 
See further Haller’s Pathological Obfervations, Obf. xlvii. 
G 2 
I 
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