382 TRAVELS TO DISCOVER 
Gonvar, by a number of obfervations of the fun-and 
ftars made by day and night, in the courfe of three years, 
with an aftronomical quadrant of three feet radius, and two 
excellent telefcopes, and by a mean of all their {mall differ- 
ences, is in lat. 12° 34’ 30%; and by many obfervations of 
the fatellites of Jupiter, efpecially the firft, both in their im- 
merfions and emerfions during that period, I concluded 
its longitude to be 37° 33’ o’ eaft from the meridian of 
Greenwich. 
Ir was the 4th of April 1770, at eight o’clock in the 
morning, when I fet out from Gondar. We paffed the Kah- 
ha, and the Mahometan town, and, about ten in the morn- 
ing, we came toa confiderable river called the Mogetch, 
which runs in a deep, rugged bed of flakey blue ftones. We 
crofled it upon a very folid, good bridge of four arches, a 
convenience feldom to be met with in paffling Abyflinian ri- 
vers, but very neceflary on this, as, contrary to moft of their 
ftreams, which become dry, or ftand in pools, on the ap- 
proach of the fun, the Mogetch runs conftantly, by rea- 
fon that its fources are in the higheft hills of Woggora, 
where clouds break plentifully at all feafons of the year. 
In the rainy months it rolls a prodigious quantity of water 
into the lake Tzana, and would be abfolutely unpafiable 
to people bringing provifion to the market, were it not for 
this bridge built by Facilidas ; yet it is not judicioufly pla- 
ed, being clofe to the mountain’s foot, in the face of a tor- 
rent, where it runs ftrongeft, and carries along with it ftones 
of a prodigious fize, which luckily, as yet, hv injured no 
part of the bridge. The water of the river Mogetch is not 
wholefome, probably from the minerals, or ftony particles 
it carries along with it, and the flatey ftrata over which it 
I runs. 
