370 Transactions of the Boyal Society of South Africa. 
European. Thoracic Vertebrae. Vertebral Foramen. 
No. 1. 
i No. 2. 
No. 3. 
No. of 
Vertebra. 
Length. 
Breadth. 
Length. 
Breadth. 
Length. 
Breadth. 
1 
15 
20 
1 14 
21 
16 
23 
2 
16 
18 
14 
18 
16 
19 
3 
16 
17 
! 15 
15 
16 
17 
4 
17 
17 
15 
15 
17 
17 
5 
17 
17 
15 
15 
17 
17 
6 
16 
17 
15 
15 
16 
17 
7 
16 
17 
15 
15 
16 
17 
8 
16 
17 
15 
16 
16 
17 
9 
16 
18 
14 
17 
16 
18 
10 
16 
18 
14 
17 
16 
18 
11 
17 
19 
15 
18 
16 
17 
12 
16 
22 
16 
21 
16 
19 
Total 
194 
217 
177 
203 
194 
216 
Length-Breadth Index, 89"4 
Length-Breadth Index,87"l 
Length-Breadth Index, 89 8 
Average Length-Breadth Index, 88'7. 
Bushman. Thoracic Vertebrae. Vertebral Canal. 
No. 1. 
No. 2. 
No. 3. 
No. of 
Vertebra. 
Length. 
Breadth. 
Length. 
Breadth. 
Length. 
Breadth. 
1 
13 
18 
13 
13 
2 
14 
16 
14 
17 
3 
14 
16 
14 
15 
4 
14 
16 
14 
14 
5 
14 
15 
14 
15 
6 
14 
15 
14 
15 
Z 
7 
14 
15 
14 
15 
- 
8 
15 
16 
15 
15 
9 
]5 
17 
15 
15 
10 
15 
17 
15 
16 
11 
15 
18 
15 
16 
12 
15 
19 
16 
18 
Total 
172 
198 
173 
189 
Length-Breadth Index, 86 8 
Length-Breadth Index, 91"5 
Average Length-Breadth Index, 89*1. 
The indices show that, as in the cervical vertebrae, the bodies of the 
thoracic vertebrae are relatively shorter and deeper in the Bushman, but 
not to such a marked degree. The vertebral foramina do not, owing to 
their almost circular shape, show much difference. Of the other parts of 
