APPENDIX. 215 
mouth, of very great extent, and which, very probably, 
empties itself into Port Melville, a good harbour on the 
southern side of Delagoa Bay. 
From what has preceded, it will be seen that the pro- 
gress of discovery from the Cape of Good Hope has extended 
to a very considerable depth into the continent, beyond the 
Colony, and that, especially of late years, it has accelerated 
its space in a very extraordinary degree, mainly attributable 
to trading speculation. With reference to the map, its 
limits may be defined in a general manner by drawing a 
line from Angra Peguena Bay, on the Atlantic coast, direct 
north, to lat. 25°, along that parallel to longitude 19°, thence 
southward to lat. 28°, from that point eastward to 22°, and 
thence in a diagonal to where the twenty-sixth degree of 
longitude intersects the tropic of Capricorn: starting again 
along the tropical parallel to longitude 31°, if the reader 
will please to protract a line southerly to the mouth of the 
river in Delagoa Bay, he will then have traced out the ex- 
tensive boundary of all the discoveries that have yet been 
made from the most austral settlement of Africa. Within 
this verge, however, a space containing about fifty thousand. 
square miles still appears unexplored: this embosoms three 
large sources of the Gariep or Orange River, namely, the 
Caledon and Stockenstrom rivers on the south, and the 
Donkin on the north, and may be represented as an oval 
figure, having in its centre about lat. 28° 30’, and long. 
25° 20’, the longest arm of which, stretching from south- 
west to north-east, will extend over two hundred and forty 
miles, and the shorter, running from south to north, over 
two hundred miles. This insulated spot has, however, been 
several times encroached upon by the Colonial farmers, 
and especially by one named Gert Cloete, of the Graaff 
Reinet district, who represents it as very beautiful, abounding 
with game, well wooded, sufficiently watered, and covered 
