OR, A TREATISE ON PILE. LL 
when the stalk is cut. (See Good’s Study of Nature, v. 5, p. 675; Lib. of Usf. Know., 
56, and Bichat’s Anat. Geul., v. 2, p. 789, &c., &c.) The most complete summary of 
Plica Polonica, will be found in Dict. des Sci. Med., Paris, 1820, v. 43, p. 226, tit. ‘“Pleque,”’ 
where all that had been previously written upon the subject by fifteen preceding authors, 1s 
collected and arranged under appropriate heads. From this compendium it would seem 
that there are five varieties of this disease, to which man is subject at all ages, and that it 
has been traced to the lower animals when they are domesticated. ‘That it is not confined 
to the hair of the head, but extends to all the hair of the body, &c.; that sometimes it 
causes the hair to grow to an extraordinary length; that it makes its appearance more 
frequently among those persons who are the worst fed, the worst clothed and the worst 
lodged, and, particularly, if they are uncleanly ; that the seat of the disease is the folli- 
cle, but that its effects extend to the stalk; that the fluid which exudes is not blood ; that 
it has been known to attack the bulbs of the hair of shaven heads; that the matting of the 
hair is not a felting of the filaments but their glwtination. ‘This is the pith and marrow of 
the information. 
A case of incipient Plica Polonica having lately been discovered, in this city, we pro- 
cured some of the pile, through Prof. John K. Mitchell, M. D. 
Examination of the Hair of Annette Engle, aged 11, born in Poland of Jewish parents, 
lahoring under incipient Plica Polonica.—Length, artificial, 14%; of an ch; shape, gene- 
rally oval; mesne diameter, <4; to <4, of an inch; colors, brown and black; lustre, very 
feeble. 
With 270 grains one inch stretched ,'; of an inch, elasticity entire. 
6“ 370 GG (73 6c = be (73 
c 520 ce &c 6c ¥h a3 écc 
G6 G10) oe Me oo ee minus {); 
“ 670 * 66 os Sf ‘“ “ as 
eG 870 AG 73 6“ a0 6s (t3 a 
66 92(.) + és 12. «cc ‘ fr 
ee 970 oe ee 4a ‘ ‘ 70 
“0,020 «* “ ee as 
ES SO Ag) be ; “ 20 “ 4h 
He EO ee 29 Aaa 
oe 1,220 oe te 23 ce ‘ 42 
UL) ee 6 25 «“ iets 
UOTE teXG). GC Ww 28 ale 
? g0 90 
se 1,520 vy nie Ay 6c 2.0 
le Om <2 oe 35 ‘ 23 
90 90 
[1820 So broke: 
Fracture, complicated, the cortex having parted and the fibres being torn out and 
lacerated ; button, black, sometimes club-shaped, and at others hamate. (See fig. 79.) 
Sheath, swollen and extending beyond the button, partly white and opaque, and partly 
translucent; shaft, varying in color; shape and diameter, for example, one shaft, 
which is of a brown color and of an imperfect shape, has a diameter of <45, 
while another, which is black, and of a sub-trianzular shape, has a diameter of 
28 ~ 
