46 PhocxnZyOrtheJncUmyofaTor^efs. 
they grow gradually higher and higher on the Spinal, 
forming two cheeks, into which is received the back of 
the anterior Ipinal procefs. 
Befidesthefe procefies already mentioned below the 
' Abdomen and oppofite to the fpinal proccffes, I find ^ 
* others not afihng from the vertehrx themlelves, but *vii.x. 
that Cartilaginous body that joyns the vertebra toge- p p* 
thcr. They confift of two fmall bones joyned toge- 
ther at the end, but diftant at the bales, lb occafiomng 
a hollow, through which there runs abundance of 
'bloud-veffels ; as the Medulla Spimlis does in the Ca- 
vity of the Spinal procefles. Thefe proceffes, as da all 
the other, grow leffer as they approach the Tayle till 
they are quite obliterated. Where the Tay le or hinder- 
fins are fafiened, the vertehr£ do proportionably leflen 
;ind do grow broader and lefs round. The vertebra are 
joyned together by the intervention of a bony Cartilagi- 
nous body thatconfifts of a double Lamina, containing, 
in a Cavity in the Middle, a gellied fubftance. This is 
an excellent contrivance for the fleftion of the body, 
for otheru ifc the vertebra themlelves are too rigid for 
iuch a motion. 
I have before mentioned that there were thirteen 
,t Ribs, that only five were faftened to the Sternum, that t J 5 S- 
the fixtli and feventh had Cartilages but not continu- 
ed to fternum ; how that they rofe obliquely from 
the Spine, &c. I fliall add that the firft five Ribs, that 
were continued to tlie Spine, had a double orig'inati- 
on ; the firft to the extremity of tlie tranfverS pro- 
cefs of a hinder vertebra, and the fecond to the bafis 
of a former. The other Ribs were only faftened to tlie 
extream of the tranfverfe or Lateral Proceffes The 
tlnrteentli or laft Rib did arife only with a Cartila^ri 
nous Origination, and afterwards became long And 
whereas the os PeBoris or Stmium, and that whicli con- 
tmues the Ribs m other Animals to the Jlermm, is ufbal- 
ly Cartilages, here 'twas all perfed bones. 
The 
