AFRICA. 25 
and furnifhcd with feveral rows of round 
tubercles, each guarded by two prickles. 
Both thefe kinds of euphorbulm are to be 
dreaded ; becaufe, being low and mixed with 
the herbage like mu(hrooms, animals, as they 
feed, run the rifk of eating them wdth their 
pafture. 
Though this part of the country is dry and 
barren, it affords an abundant variety of plants, 
from which an expert botanift might have 
derived more benefit than I did. I, however, 
made a great number of drawings of the mod 
remarkable obj efts ; engravings from which I 
intend to publifli hereafter. 
' During my refidence with this horde, I ob- 
ferved large flocks of cranes and paroquets 
pafs regularly over our heads every day, from 
north- weft to fouth-eaft. The latter appeared 
to me to be proceeding towards Caffraria ; 
and they were perhaps of the fpecies I had feen 
in that country. I diftinguifhed them by the 
continual chattering which they made during 
their flight, and by their manner of flying in 
pairs, male and female ; but they were at fo 
great a height that I could not kill any of them • 
and this was the cafe with all the birds of paf- 
C 4 fage 
