112 TRICIIOLOGLA MAMMALIUM ; 
yi, of an inch; cortex, dark-colored and opaque; when treated with terebinthus, becomes 
partially translucent, and a greatly imterrupted dark coloring matter is then seen in the 
centre of the filament. ‘Transverse sections, viewed as opaque objects, show a dark sur- 
fice, with a minute white central spot; disks, viewed as transparent objects, show a much 
larger white, (or motley,) irregularly shaped centre, in which are perceived the ends of 
fibrils and a dark central spot. 
Having removed the cortex, fibres of a pure white and lustrous are seen. 
These are 
separable into fibrils, one of which measured the ;515> of an inch. Direction, at an acute 
angle ; inclination, crisped, frizzled and spirally curled; diameter of the curl, 3% of an 
inch; apex, mostly abrupt, (artificial.) 
Or THe Hair in Tinea Capirtis, or Favus.—Hair of Mary O’ Donnell, aged five years, 
supposed to be laboring under Tinea Capitis, or Favus—Lenegth, about 2 inches; shape, 
oval; diameter of some, 4, by 34, of an inch, others 53, by xy. 
‘The diameter of the 
same filament sometimes varying in 
diameter the 51, part of an inch; color, sometimes 
dark brown, at others horn-colored; no lustre; direction, at an acute angle; inclination, 
stiflly bending at nearly a right angle.* (See fig. 80.) 
Ductility, Elasticity and Tenacity.— 
With 370 grains one inch stretched ,4; of an inch, elasticity entire. 
66 570 + “c ‘6 or ce 73 
oe 720 ce “cc oe ao “ec oe 
oe 770 os 66 66 air (73 “ce 
SAS 2 (pas He : oy ut minus 5!5 
(73 870 ce 7 ‘ 30 ce 73 30 
% 920 * c 2 oe - * 30 
970 « : “ 4H : a i 
i a es ‘ 24 es ae: 
VGN 7 One * e t ay «48 
se T 220 oe e 6s 28 a3 “e 46 
1,820 44 ‘ eT) g “od 
oe 1,370 “6 66 “es 32 oe se 20 
Pa Aao. @ ie e 28 
“1470 broke: 
Fracture, abrupt; button, mostly obliterated, leaving the end of the shaft crooked, rag- 
ged and discolored, two buttons found sometimes adhering, enclosed in the same shaft; sheath, 
very much elongated and ragged, vessels adhering of the diameter of ;3!;5 of an inch; 
shaft, varying in diameter and color, bending abruptly when on the head, but expanding 
when put into water; apices, all abrupt. 
Remarks.—This pile is so completely diseased that the button and the inferior portion 
of the shaft are destroyed. The shaft, bending at nearly a right angle, is an unfavorable 
* Resembling in this respect the pile of some of the species of animals who have the payed cortex. 
