Crass f. MI Goa E, 
tion to its breaking, they might with fuccefs form 
it for the faddle, the draught, orthe burden. The 
fize and ftrength of our breed is at prefent fo im- 
proved by the importation of the Spanifh male 
affes, that we fhall foon have numbers that may 
be adapted to each of thofe ufes. Perfons of the 
firft quality in Spain are drawn by them, for one 
of which (as Mr. Clarke informs us*) fifty or 
fixty guineas is no uncommon price; nor is it fur- 
prizing, if we confider how far they excel the 
horie in draught, in a mountanous country; the 
mule being able to tread fecurely where the former 
can hardly ftand. 
This brief account may be clofed with the ge- 
neral obfervation, that neither mules nor the fpu- 
rious offfpring of any other animal generate any 
farther: all thefe productions may be looked on 
as monfters ; therefore nature, to preferve the ori- 
cinal fpecies of animals entire and pure, wifely 
ftops, in inftance of deviation, the powers of pro- 
pagation.. | 
* Letters on the Spani/h nation, 
Vor. I. C D ly. 
