ACROSS UNKNOWN SOUTH AMERICA 
to clear up this point, now that attention has been 
drawn to it. 
An island, 1,000 metres long, Olivia Island, was 
found at the point where the main arm of the river flowed 
in a direction of 345° bearings magnetic, and where to the 
northwest, north, and northeast, three hill ranges were 
before us, one 300 feet high, extending from southwest 
to northeast on the left side of the river; another thickly 
wooded hill from west to east, also 300 feet high; and yet 
another one, the highest of all, behind it from south- 
southwest to north-northeast, on the right bank. The river 
was 350 metres wide, and its water almost stagnant. 
Another barrier of rock held up the stream. We came 
to an island 800 metres long, 300 metres wide, Sabrina 
Island, on the left side of the stream, which showed a 
beautiful spit of white sand at its southern end. 
I halted on the bank where the island began in order 
to take observations for latitude and longitude, and as 
the day was a very clear one I took forty-eight consecutive 
sights of the sun with the sextant. Latitude 10° 35'. 1 
south; longitude 58° 12' west. While I was busy ob¬ 
serving the sun I thought I heard curious noises in the 
forest just behind me. The dogs all of a sudden jumped 
up, barking furiously, and I heard the sounds of what 
seemed an escaping person dashing away through the 
thick growth near the stream. My men were greatly 
excited, saying it was an Indian who had come quite close 
to me, and was about to shoot an arrow while I was busy 
with my sextant and chronometers. All through lunch 
they sat with their loaded rifles next to them, in case we 
might be attacked. 
The river now flowed in a straight line for 5,000 metres 
in a northwesterly direction. Half way along was a large 
triangular island, Pandora Island; then farther on the 
left another island, 2,000 metres long, Sibyl Island. 
The river was of extraordinary beauty in that region. 
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