CHAPTER VII. 
OF DISEASED BONES. 
T is not the defign of this chapter to enter minutely 
into all the difeafes of the bones mentioned by au¬ 
thors, but in a general manner fo far only as relates to 
their cure, or to fuch extraordinary difeafed bones as 
I have made prints of in this work. 
The bones are fubjedt to difeafes from all the fame 
caufes that the other parts are, but either from their hardnefs, infenfibi- 
lity, or other caufes, they neither are fo frequently difeafed, nor do their 
difeafes appear fo various, and it is generally of more confcquence what 
texture the difeafed bone, or part of the bone is of than from what caufe 
that difeafe proceeded; for when difeafes happen upon the fur faces of the 
hard bones, they ufually admit a cure by exfoliation; but when matter is 
made in the lpongy ends of the cylindrical bones, or in the bodies of o- 
ther lpongy bones, the matter whatever was the firif caufe infinuates it 
felt through thofc fpongy cells, fwelling the bone, and making generally 
an incurable caries; but if the matter is corrofivc, it often ulcerates thefe 
parts (Tab xlix. Fig. v.) and ufually makes fo large a difeharge as to deflroy 
the patient where the part difeafed cannot be extirpated, which is often the 
cafe when matter is made in the bones in fcrophulous habits. 
