APPENDIX. ‘179 
the latter reaching the Orange or Gareep; and he termi- 
nated his researches at the Chu Lake, laid down by him in 
latitude 27° 15’ and longitude 24°, where his. people refused 
‘to proceed farther. A ridge of mountains, originating in 
a low:chain of sand-stone hills at Klaarwater, and attaining 
a considerable elevation at the Kuruman, under the name 
of Kamhunni, whose highest peak just above Litakou, I 
should rudely estimate at about 1500 feet, runs in a direct 
northerly range to the Chue Lake, where it is called by 
eminence, among the natives, Maadje, or the Mountain, has 
been supposed by some geographers to be the commence- 
ment of the Lapata range, but which, by recent observers, 
has been found to be incorrect, for after: proceeding to a 
short distance beyond the lake, they suddenly fall off and 
entirely disappear. The length of this chain including the 
subsidiary hills, out of which it appears to grow, may be 
estimated at two hundred miles. From Klaarwater to his 
extreme point of observation, the hills, mountains, and 
rocks Burchell states to be composed of sand-stone incum- 
bent upon a vast even and underanged bed of limestone, 
which he considers primitive. 
The route of this intelligent traveller, beyond cs prede- 
cessors, covers a space of nearly one degree of latitude and 
longitude. His geographical observations have given con- 
siderable precision to our knowledge of the interior, by 
determining the exact situation of certain points, and his 
geological remarks have thrown much light on the physical 
constitution of the trans-Gareepine regions. But the bright- 
est laurels in the wreath awarded him by public opinion 
are those for his contributions to natural history.. Dr. 
Campbell revisited the scene of his former labours in 1819. 
Without any pretensions to science (unfortunately), but 
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