_-diftant from the zenith of Gondar, it 1s feldom lower than 
are the limits of the variable winds, and we have then 30° 
‘670 TRAVELS TO DISCOVER 
the ee of a too-fcorching fun. 
on its return to the zenith of Gerri,'again it refumes the ab- 
ary ss - 
made to receive it, the moft violent thunder poflible to be 
conceived inftantly follows, with rain; after fome hours, the 
fky again clears, with a wind at north, and it is always dif- 
agreeably cold when the thermometer is below 63”. 
Tue fecond thing remarkable is the variation of the 
thermometer; when the fun 1s in the fouthern tropic, 36° 
72°; but it falls to 60° and 59° when the fun is immediately 
vertical; fo happily does the approach of rain compensate 
Tue third is, that remarkable ftop in the extent of the 
rains northward, when the fun, that has conducted the va- 
pours from the Line;and fhould feem, now more than ever, 
to be in poffeflion of them, is here over-ruled fuddenly, till, 
folute command over the rain, and reconduéits it to the Line 
to furnifh diftant deluges to the fouthward. 
I cannot omit obferving here the particular difpofition 
of this peninfula of Africa; f{uppofing a meridian line, drawn 
through the Cape of Good Hope, till it meets the Mediter- 
ranean where it bounds Egypt, and that this meridian’ has 
a portion of latitude that will comprehend all Abyffinia, 
Nubia, and Egypt below it, this fection of the continent, 
from fouth to north, contains 64° divided equally by the 
equator, fo that, from the Line to the fouthmoft point of 
Africa, is 32°; and northward, to the edge of the Mediter- 
ranean, is 32° alfo: now, if on each fide we fet off 2°, thefe 
fouth, and 30° north, within which fpace, on both fides, the 
eka trade- 
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