32 TRAVELS TO DISCOVER 
breadth to be 276 miles, equal to g2 leagues, or there- 
abouts. | 
AGAIN, as the ‘generality of maps have placed the coaft of 
Ayabia where Loheia ftands, in the 44°, and it is the part of 
the peninfula that runs fartheft to the weftward, all the 
weit coaft of Arabia Felix will fall to be brought farther 
eaftabout 3° 46’ 0%. 
Berore packing up our barometer at Loheia, I filled a 
tube with clean mercury, perfectly purged of outward air; 
and, on the 3oth of Auguft, upon three feveral trials, the 
mean of the refults of each trial was, at fix in the morning, 
26° 8’ 8”; two o'clock in the afternoon, 26° 4’ 1”; and, half 
paft fix in the evening, 26° 6’ 2”, fair, clear weather, with very 
Jittle wind at weit. 
Ar Mafuah, the 4th of October, I repeated the fame ex- 
periment with the fame mercury and tube; the means 
were as follow: At fix in the morning 25° 8’ 2”; two o’clock 
in the afternoon, 25° 3 2” ; and, at half paft fix in the evening, 
25° 39", clear, with a moderate wind at weft, fo that the ba- 
xometer fell one inch and one line at Mafuah lower than it 
was at Loheia, though it often rofe upon violent ftorms of 
wind and rain ; and, even where there was no rain, it again 
fell inftantly upon the ftorm ceafing, and never arrived to the 
height it ftood laft at on the coaft of Arabia. The greateft 
height I-ever obferved Fahrenheit’s thermometer in the 
fhade, at Mafuah, was on the 22d of October, at two in the 
afternoon, 93°, wind N. E, and by N. cloudy; the loweft was 
on the 23d, at four in the morning, 82°, wind weft. It was, 
to fenfe, much hotter than in any part of Arabia Felix; but’ 
I | we 
