OH, A TREATISE ON PILE. 25 



A shaving taken from the exterior of the black hair was dark-colored, and one from the 

 brownish yellow, was brownish yellow; showing that the coloring matter was in the 

 cortex.* 



Remarks. The delicate dimensions and lustre, smallness of the button, thinness of 

 the sheath, and, above all, large number of the vessels of this hair of the body, show the 

 thorough breeding of the mare ; but the deficiency in ductility and tenacity of the hair of 

 the mane, would not indicate much vital power. 



Tail of the Hippopotamus. This tail is ovoidal; diameter, at the posterior extremity, T | u 

 of an inch; at the anterior, T f 7 ; color, black; disks exhibit the termination of small, 

 irregularly shaped fibres. Fig. 16 represents a transverse section. 



Tail of the Zebra. This hair is cylindrical and oval; diameter, T | r of an inch; color, 

 black, except a minute white central spot. 



Tail of the Cerous. This hair is oval; diameter, ^-5 by T | T , tapering to T }g by j^^. 



Tail of the Arabian Bull. This hair is cylindrical; diameter, T -J-g- of an inch; cortex, 

 black, solid ; diameter, ^^ ; centre sometimes a void canal, and, at others, partly filled with 

 a white scaly substance 



Fig. 16 2 represents the disk of the tail of the Elephant. 



* HAIR OF THE BODY. Length, from ^ths to fgSu of an inch; greatest diameter, j^ s of an inch; button, quill- 

 gliapcd, white, opaque. Sheath, none; or, if any, adhering so closely to the button as to be undistinguishable. Follicle, 

 had none to examine. Vessels, numerous, fibrous, divergent from the lower extremity of the button. Shaft, oval, 

 brownish-yellow or white, lustrous. Cortex, transversely striated, indicating minute scales. Transverse sections, (or disks,) 

 show a solid yellow ring, with a white centre. Apex, pointed. 



