ACROSS UNKNOWN SOUTH AMERICA 
and longitude, thirty-one consecutive sights of the sun 
being taken. Latitude 10° 13'.3 south; longitude 58° 35' 
west. 
When we resumed our journey four more islets were 
visible and a barrier of rock from northwest to southeast 
again stretching right across the stream. Just beyond lay 
Romola Island, 1,200 metres long and equally broad. At 
the end of the island we found a channel 100 metres wide, 
separating it from two neighbours on the east; in fact, 
much to my dismay, we found ourselves in a regular maze 
of islands and rocks, and my time was fully employed 
keeping an account of and measuring them. 
A crescent-shaped island, Urania Island, 1,000 metres 
in length, with most wonderful vegetation upon it, was 
now on our left. That region was extraordinarily rich 
in rubber. The channel which we had followed was strewn 
all over with rocks. Another island, 400 metres long, 
Caterina Island, followed. The current in the Arinos- 
Juruena River had a speed of 80 metres a minute. The 
river in places where no islands lay had a width of 
200 metres. The water was most beautifully clear, of a 
lovely emerald green, with a wonderful white sand bottom 
clearly visible, although the river had considerable depth 
in many places. Yet another island, 600 metres long, 
Una Island, came in sight to the right of us; then another 
between two companions, forming almost a circle round 
the central isle. The river now formed a basin not less 
than 800 metres wide with innumerable rocks at the 
entrance. We went on, kilometre after kilometre, spend¬ 
ing our time in avoiding unpleasant rocks, when again we 
came first to fairly strong rapids, then to an extremely 
dangerous rapid, which we shot, as we were carried away 
into it before we had time to realize where we were. We 
had the greatest difficulty in extricating ourselves from the 
many terrifying whirlpools at the end of the rapid, in a 
great basin 900 metres wide. We found a most beautiful 
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