NATURAL HISTORY. 65 
fiirnifhed with a certain mufcle, by which it can ex- 
ert, or draw back the eye, as neceflity requires. 
As a recompente for this defeét in the optic nerves, 
the mole enjoys two other fenfes in the higheft per- 
fection ; viz. hearing and {melling; the firft of which 
givesit the moft early notice of danger. while the lat- 
ter, although in the midit of darknefs, dire€ts.it to 
itstood. ‘Lhe wants of a/fubterraneous animal being 
~ but few, fo thofe of the mole are eafily fipplied ; 
worms and infects, inhabiting their regions, being 
their only food. 
_ Although the mole is generally black, yetit is 
fometimes fpotted, and has alfo been found quite » 
white. The furis fhort and clofe fet, and {moother 
- than the fineft velvet. The length, including the 
tail, which is about an inch, is feven inches. It 
breeds in the {pring, and generally brings forth four 
or five ata time. : 

ee Pw OOO — 
JERBOA, 4% 
"Tats fingular, and, we may fay, pretty little ani- 
_ mal, is a native of Egypt, Barbary, Paleftine and the 
_ defarts between Balfora and Aleppo. It is about the 
fize of a large rat; has dark and full eyes, long 
whifkers, broad erect ears, and ahead like a rabbit. 
' The tail is about teninches long, at the end of which 
isa tuft of black hair, tipped with white. The breaft 
_and belly are of a whitifh colour; but all the other 
part of the body is afh colour at the bottom, and 
_ tawny at the ends. - The fore legs are not above an 
inch iniength, with five toes on each, which are all 
- furnifhed with fharp claws; but the hind legs. which 
are two inches. and a quarter in length, and covered 
with fhort hair, exactly refemble thofe of a bird, 
having but three toes, the middle of whichis the 
longeft; they are alfo armed with fharp claws, 
| F- ; 
