102 TRICHOLOGLA MAMMALIUM ; 
The mane of the Lion, 8 inches. 
The bristle of the Russian Hog, 124 inches. 
The hair on the side of the Asiatic Bear, 10 inches. 
The hair on the side of the Goat, 9 inches. 
The hair on the breast of the Canadian Elk, 7 inches. 
The hair on the side of the White or Polar Bear, 6 inches. 
The hair on the back of the Egyptian Sheep, 52 inches. 
The beard of the same, 5 inches. 
The hair on the back of the Grizzly Bear, 4 inches. 
The hair from the back of the Striped Hyena, 33 inches. 
The hair upon the back of the Prairie Wolf, 3 inches. 
The hair upon the back of the [chneuman, 24 inches. 
The wool on the body of the Buffalo, 2 inches. 
The hair from the side of the African Leopard, 2 inches. 
The long hairs on the back of the Raccoon, 2 inches. 
The long hairs on the Ferret, the Possum and the Stone Marten, 1,8, of an inch. 
The hair on the back of the Hudson Bay Marten, the Lynx and the Kangaroo, 1,%, of 
an inch. 
The hair of the Kangaroo Rat, 12; of an inch. 
The fur of the Chinchilh, 1,2, of an inch, 
The fur of the English Rabbit, 1 inch. 
The fur of the Blue Jennet, ;% of an inch. 
The fur of the Black Jennet, 38 of an inch. : 
The fur of the White Mink, ,% of an inch. 
The fur of the Ermine, ;4, of an inch. 
The fur of the Mole, ;2, of an inch. ‘ 
Some writers are of opinion that the /ength of hair is indicative of the strength of the 
animal, but we believe that this is an error; it is its ¢enacéty which is the test. : 
Of the Manner of Ascertaining the Diameter of Pile—The diameter of pile is ascer- 
tained by the microscope and micrometer. Of this latter instrument there are several 
kinds, some of which are well described in Quekett on the Microscope, from page 189 to 
196. Before the discovery of this instrument, the fineness (diameter) of wool was a mere 
guess, founded upon the experience of the wool stapler; now it isa matter of mathematical 
certainty. But, in order so to render it, the filaments must not be measured while lying 
horizontally upon the stage of the microscope; but disks must be cut in the manner 
described in this work. A microscope and micrometer is a very expensive apparatus, and 
moreover it is not every possessor who can use them effectually without considerable expe- 
rience ; it therefore struck us that a cheap and simple instrument, which will enable the 
sheep-breeder to ascertain the relative fineness of fieece, would be a valuable acquisition, 
and we believe that such a one can be suggested. There is a point of approximation to 
the eye where objects can be distinctly seen, this poimt 1s different in different individuals, 
according as they are long or short sighted, or have sight of the usual and medium kind, 
