55 



neural spine is elevated uud compressed; the diapophysis is convex above 

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

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

 ral vertebrae are flattened below, in all except th(! first, by a plane which is 

 separated from the sides by a longitutlinal angle. The neural sphies of the 

 anterior five sacral vertebra; are mere tuberosities. A large sutural surface 

 for attachment of a transverse process is seen on the posterior Ihird 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 nf" the '. nintli support transverse processes. I^hese are mon; 

 likr those of the dorsals in having lliree stmng l)a.'<nl supportiny; ribs, the 

 anterior and posterior extending for some distance along the arch. 



Either naturally, or in consequence of distortion, the plate ol" the ilium 

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

 p,nt of it its plate pre.sents a free margin on the outside as well as the insi(h" 



of the femoral articulation. 



Measurements. 



M. 



l.,eu^tli of tbe niiib posterior dorsal vertcbrte 0. 8-^0 



Lciiylli of the nine sacral vertebra; (36} iuches) 0.93U 



Ltiigth of right ilium (two pieces, 0.84+0."<i2), (41 inches) I.OIJO 



Length of eighth dorsal from the sacrnm 0.090 



Length of the base of the ueurapoijhjsis 0. 085 



l)e]ith of the articular face 0. 153 



Widlh of tlie articuhir face 0. 123 



Lengtli of the second from sacrum 0.070 



Depth of t lie ailiiular face 0. 155 



Width of the articular face 0. 137 



Elevation of the neural canal 0. O^") 



Width of the neural canal (). 028 



Elevation to the face of the zygapophjses 0. 104 



Elevation to the ba.se of the neural spine 0. 150 



Length of t he diapophysis from the lower base 0. 200 



Length of the diapophysis from the capitular arti( ulati< n 0. 125 



Antero-posterior width above 0. O.'O 



Antero-posterior width of the base of the neural spine (i. 070 



Antero-posterior width at the zygapnphysis. 0.078 



Length of the neural spine (fragment) 0.200 



Width of the centrum of tlie tirst sacral 0. KiO 



Depth of the centrum of tlie tirst sacral (to the nenrapopbysis) 0. 14.") 



Length of the centrum of the tirst sacral 0. 100 



Leugrli of the centrum of tlie seventh sacral 0. lOO 



Depth of tin; centrum of the seventli sacral (behind) 0.085 



Wid'.h of the centrum of the seventh sacral (behind) 0. 100 



Expanse of the second sacral transverse sujiport (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 nf the ilium at the anterior extremity 0. 140 



