55 



neural spine is elevated and compressed; the diapopbysis is convex above 

 and concave along the two inferior faces, most so on the posterior. The 

 articular face of the first sacral vertebra is wider than deep. The eight sac- 

 ral vertebras are flattened below, in all except the first, by a plane which is 

 separated from the sides by a longitudinal angle. The neural spines of the 

 anterior five sacral vertebras are mere tuberosities. A large sutural surface 

 for attachment of a transverse process is seen on the posterior third of the 

 eighth sacral vertebra, which descends nearly as low as the plane of the in- 

 ferior surface. On the 1 tenth sacral, there is no such process, but its neural 

 arch and that of the '! ninth support transverse processes. These are more 

 like those of the dorsals in having three strong basal supporting ribs, the 

 anterior and posterior extending for some distance along the arch. 



Either naturally, or in consecpience of distortion, the plate of the ilium 

 is at a strong angle to the vertical axis of the acetabulum, and at the posterior 

 part of it its plate presents a free margin on the outside as well as the inside 



of the femoral articulation. 



Measurements. 



M. 



Length of the nine posterior dorsal vertebra? 0.880 



Length of the nine sacral vertebrse (36f iuches) 0.930 



Length of right ilium (two pieces, 0.84+0.22), (41 inches) 1. 0G0 



Length of eighth dorsal from the sacrum 0. 090 



Length of the base of the neurapophysis 0. 085 



Depth of the articular face 0. 153 



Width of the articular face 0. 123 



Length of the second from sacrum 0. 070 



Depth of the articular face 0. 155 



Width of the articular face 0.137 



Elevation of the neural canal 0. 045 



Width of the neural canal 0. 02S 



Elevation to the face of the zygapophyses 0. 104 



Elevation to the base of the neural spine 0. 150 



Length of the diapopbysis from the lower base 0.200 



Length of the diapopbysis from the capitular articulaticn 0. 125 



Antero-posterior width above 0.050 



Antero-posterior width of the base of the neural spine 0. 070 



Antero-posterior width at the zygapophysis 0. 078 



Length of the neural spine (fragment) : 0.200 



Width of the centrum of the first sacral 0. 160 



Depth of the centrum of the first sacral (to the neurapophysis) 0. 145 



Length of the centrum of the first sacral 0. 100 



Length of the centrum of the seventh sacral 0. 100 



Depth of the centrum of the seventh sacral (behind) 0. 085 



Widlh of the centrum of the seventh sacral (behind) 0. 100 



Expanse of the second sacral transverse support (22 inches) 0. 560 



Length of the ilium anterior to the acetabulum 0. 470 



Length of the acetabulum 0. 200 



Length of the ilium posterior to the acetabulum 0.390 



Width of the ilium at the anterior extremity 0. 140 



