TABLE XIII. 
fig. I. 
x > 2 j 3> ^ c - Sixteen of the fuperior vertebra: fawed through to flievv their fpongey texture. 
A A The Channel in which the fpinal marrow is contained,\ 
B B The fpinal procejf'es of thefe vertebra .?. 
C A wire pafs’d through the bodies of the vertebra. 
F I G. II. 
*7> 1 S> £cc. The remaining vertebra: of the fpine faw’d through. 
A A Toe channel for the medulla fpinalis. 
B B The fpinal proceffes of thefe vertebra. 
C The wire pajfwg through the bodies of the vertebra. 
D The os facrum fowl'd through its middle . 
