5i THE FOSSIL SLOTH AT BIG BONE CAVE, TENN. [Jan. 15. 



Fig. 12 (X % ). — The ninth bone found (in Layer 2, depth about i foot). Two 

 vertebral epiphyses indicating, because unwelded upon the larger bone, a young 

 animal. The cartilage is plainly seen above the break. 



Fig. 13 (x %).— The ninth bone found (in Layer 2, 

 depth about i foot). Fragment of the vertebral epiph- 

 ysis shown in Fig. 12. The attached cartilage is 

 plamly seen. The color of the latter in the original is 

 semi-translucent red. 



may have been car- 

 ried away to hid- 

 den crannies through 

 burrows noted later 

 communicating with 

 the rubbish. 



Long before we 

 had pulled the last 

 bone out of the dust, 

 our attention was at- 

 tracted to the lower 

 or older portion of 

 the manure, which, 

 owing to its peculiar 

 consistency, I have 

 called 



ZA YER 3. 

 {i foot thick.) 

 In it we observed no porcupine quills or tufts of fur, and for the rea- 

 son below stated suspected that this lower subdivision of the dry ex- 



