TABLE XII. 
FIG. I. 
The laft vertebra of the loins. 
A The under fide of its fpongey body. 
B B The inferior oblique proeeffes. 
C One of the fupenor oblique proeeffes. 
D D The tranfuerfe proeeffes. 
E The fpinal procefs. 
FIG. II. 
The forefi.de of the os facrum. 
* 
ly 2, 3, 4, 5, 6. Parts of the os facrum, which in young fubjeBs are difiinB bones. 
A That part of the os facrum , which articulates with the fpongey body of the lowefi vertebra 
of the loins. 
B B Two proeeffes of the os facrum, which articulate with the inferior oblique proeeffes of 
the lajl vertebra of the loins. 
C That part of the os facrum, which articulates with the os coccygis. 
D That part of the os facrum, which joins with the os innominatum. 
E E, &c. Foramina for the exit of the nerves. 
F I G. III. 
The back fide of the os facrum. 
A A The two proeeffes, which articulate with the inferior vertebra of the loins. 
B That part which articulates with the os innominatum. 
C Remarkable ruga 6? foramina. 
DD Two fpinal proeeffes. 
EE, &c. Foramina for the paffage of the nerves. 
F The channel through which the medulla fpinalis paffes. 
G The end of that channel. 
F I G. IIII. 
The external view of the os coccygis. 
I, 2, 3, 4. Shews its compoftion of four diftinB bones in young fubjeBs. 
fig. v. 
g. 2, 3, 4, 5. The external view of the os coccygis, with part of the os facrum . 
