AFRICA. 57 ' 
fize of every inteftine, and the comparative 
length of the hair in all the different parts of 
the body. So much fcieace is affuredly be- 
yond my fphere ! 
I arrived at the horde the 23d of ]^^J^ and 
had been there eighteen days. I began to 
languifh with impatience, and was defirous o£ 
refuming my journey ; but eager as I w^as to 
be gone, I had thought this ftay neceflary to 
reft and recruit my cattle. My horfes had 
already refumed their ftrength and fire. Of 
thirteen oxen which my people had brought 
with them, feven' were tolerably recovered; 
but there were fix of which I defpaired. There 
is no cloven-footed animal in which the vital 
powers are more flowly reflovated than in the 
ox. Having no cutting teeth in the upper 
jaw, it can pluck up the grafs only with its 
lips, which, being thick, will not allow it to 
crop the fhort and fucculent blades of the 
young fhoots. If fatigue does not leave it 
fufficient ftrength to ruminate, when it meets 
with forage of indifferent quality, its ftomach, 
for want of this fecond and neceflary maftica- 
tipn, has to exercife its digeftive faculty oa 
imperfedly 
