1 " INTRODUCTION. 
Thefe experiments, which were a fource of 
confiderable araufement, occupied my hours of 
leifure, filled up the interval between my two 
journeys, and ferved to moderate my impa- 
tience. But at length the defire of again con- 
templating nature recurred with fo much 
force, that a refidence at the Cape became in- 
fupportable, and I began to think ferioufly of 
my departure. 
TRA. 
