NORTH AMERICA* 
43 
am incredibly fertile ; which appears From the tall 
re^ds of the one, and the heavy timber of the other* 
Before we left the waters of Broad River, having 
encamped in the evening on one of its confiderable 
branches, and left my companions, to retire, as ufual, 
on botanical refearches, on afeending a fteep rocky 
hill, I accidentally difeovered a new fpecies of ca- 
ryophyllata (geum odoratiffimum) ; on reaching to 
a fhrub my foot flipped, and, in recovering myfelfi 
i tore up fome of the plants, whofe roots filled the 
air with animating feents of cloves and fpicy perfumes* 
On my return towards camp, I met my philo- 
fophic companion, Mr, Mflntofli, who was feated 
on the bank of a rivulet, and whom I found highly 
entertained by a very novel and curious natural ex- 
hibition, in which I participated with high relifli. 
The waters at this place were ftill and fhoal, and 
flowed over a bed of gravel juft -beneath a rocky 
rapid : in this eddy ftioal were a number of little 
gravelly pyramidal hills, whofe fummits rofe almoft 
to the furface of the water, very artfully conftrudt- 
ed by a fpecies of fmall cray~fifh (cancer macrou- 
rus) which inhabited them: here feemed to be their 
citadel, or place of retreat for their young againft 
the attacks and ravages of their enemy, the gold- 
fifli : thefe, in numerous bands, continually infefted 
them, except at ftiort intervals, when fmall detach- 
ments of veteran cray-fifh fallied out upon them, 
from their cells within the gravelly pyramids, at 
which time a brilliant fight prefen ted : the little gold 
fifli inftantly fled from every fide, darting through 
the tranfparent waters like ftreams of lightning $ 
fome eyen fprang above the furface, into the air, 
but all quickly returned to the charge, furround- 
ing the pyramids as before, on the retreat of the 
cray- 
