110 TRICHOLOGIA MAMMALIUM; 
than the hair. In the last one the epidermis has the appearance of tanned leather, partly 
decayed. 
We have a lock of hair, taken from the head of an infant who was buried twenty-one 
years, which is in a tolerable state of preservation, while the skin is entirely decayed. 
We might as well also notice again, the instances of hair found in the stomach of Rumi- 
nants, and expelled from the uterus, which, except that the button is decayed or not to be 
found, is not very much injured. 
We have some hair from the head of a lady, that was in the “erave thirty-two years. 
It has lost its ductility, elasticity and tenacity. 
Or tHE TRANSPLANTING oF Harr.—Dieffenbach* and Weismant+ assert that a hair 
may be drawn out of one place and transplanted in another. Muller admits the possibility 
but denies the probability of this statement. (See Elem. Phys., 119.) 
Or tue Errecr or Diseases or tue Bopy upon Harr.—F or much information upon 
this head, see Rayer and Wilson upon Diseases of the Skin. See also Traité des Maladie du 
Cuir Chevelu par Cazenave, 1850. Dr. Green, (in Diseases of the Skin, p. 286,) says that 
the secreting bulbs (follicles) of the hair, are secondarily or primarily affected in 
several diseases; that exanthematoust fevers are particularly apt to cause a temporary 
suspension of their functions, so that the hair is generally shed on the return of con- 
valescence. In some instances (he adds) it amounts to a complete annihilation of their 
office, when permanent baldness is the consequence. 
In such cases we suppose that the follicle is destroyed. It has been remarked that the 
wool of sickly or murrain sheep is finer, though it has less tenacity and possesses no lustre. 
And Mr. Luccock (speaking of the wool of old sheep which had lost their yolk) says 
that it ‘dies in the bon,” i. e. that it sinks in the water in which it is washed. 
Or Diseases or Pi.e.—Bichat was of opinion that the exterior envelope of the hair 
(the cortex) is lifeless and insensible, and that therefore it cannot be the seat of any 
disease, either acute or chronic; from which he leaped to the conclusion that grey (color- 
less) hair, cannot be the subject of disease. (See Anat. Genl., 2 v., p. 786.) But when 
Bichat wrote this passage, it was supposed that a hair was composed of a cortex and 
medula (coloring matter) only. 
Or Prica PoLtonica.s—A monstrous deal has been written upon this diseasé; never- 
theless, there are some authors who doubt its existence. It is said that hair, under its 
influence, is enlarged in bulk, and that a passage is formed for red blood, which exudes, 
* Nonn. de Regen. et transplan., Wurzbourg, 1832. 
+ De colitum partium, Leipzick, 1824, p. 33. 
{ From exanthemeta, eruption. 
2 From plico, to knit, and Polonica, of Poland, ‘‘the Polish knit,’ beeause the disease was thought to be peeuliar to 
Poland, and that it caused the hair to knit er entangle. 
