COMPARATIVE MEASUREMENTS. 



105 



Spine to the bifurcation . 

 Length of anterior process 

 Length of posterior process 



MASTODOX. 



ELEPHANT. 



Inches. 



Inches 



17 



. . 13 



71 



. . 13 



11 



. . 6 



In the Elephant the posterior process is many inches shorter, while 

 the anterior is longer. 



Width of the anterior spinal fossa . 

 Greatest width of the posterior fossa 

 Entire width of the inner face . 

 Superior ridge or base of the scapula 

 Inferior ridge or costa 



Anterior ridge 



Length of the glenoid cavity . 

 "Width of the glenoid cavity 



4| 

 30 

 24 

 26 

 20 

 30 



7 



4 



4| 

 14 

 19 

 24 

 18J 

 32 

 101 



Except in size, all the parts of this bone correspond nearly with those 

 of the large skeleton, but differ in many respects from the Elephant, par- 

 ticularly in the form and direction of the processes. 



The glenoid cavity has the same semi-lunar form that it has in the 

 great skeleton and in the Elephant. 



OS HUMERI. 



From the top of the great tuberosity to the lowest part of the external condyle 301 

 Frorn the summit of the head of the bone to the lowest part of the internal 



condyle 281 



The greatest circumference of the superior extremity of the bone ... 27 



Smallest circumference of the middle of the bone 14 



Circumference of the inferior extremity of the bone 23 



Length of the articulating surface of the head of the bone from front to rear . 10| 



Greatest transverse width of the head of the bone from front to rear . . 51 



Articulating surface of the condyles transversely ...... 7 



Articulating surface of the condyles antero-posteriorly 10 



14 



34 



351 



29 



14 



271 



101 

 91 

 81 



