CHAPTER IV. 
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BONES OF THE UPPER LIMB. 
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4 • • k f ™ 
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” SUfe- Lavicula (Tab. xxii.) is connected at one end to the 
v 'if , i \ ^ * fternum with a loofe cartilage, and at the other to the 
f Muf I- ..... ^ 
proccflus acromion of the fcapula; its chief ufe is to 
keep the fcapula a fufficient di (lance from the bread, 
by which means the (houlders are hindred from co¬ 
ming near together, as they do in thofc quadrupeds 
who ufe their fore limbs only to walk on, and not as men do their hands. 
Scapula (Tab. xxii.) is fixed to the fiernum by the clavicula, but its 
chief connexion is to the ribs and fpine, by thofe mufcles which are made 
alfo for its various motions; and in fuch quadrupeds as have no clavicles 
it is fixed only by mufcles, whofe adtions give to this bone a great deal of 
that motion which feems to be in the joint of the (boulder. The under 
fide of this bone is a little concave, partly to (it it to the outer furface of 
the ribs on which it moves, and partly to give room for the fub-fcapula- 
ris mufcle. On the outfide arifes a large fpine; the fore part of which is 
called the proccflus acromion, to which the clavicula is fixed: In men 
and fuch quadrupeds as have clavicles, and ufe their fore limbs like arms, 
this procefs and fpine are much larger and more prominent, not only for 
the better fixing the clavicle, but alfo to remove the mufcles farther from 
