ACROSS UNKNOWN SOUTH AMERICA 
ankles were about three times their normal size. I ex¬ 
perienced an unbearable pain in my heart, with continuous 
heart-burning and sudden throbbings, succeeded by spells 
of exhaustion. Giddiness in my head was constant, and 
I was so weak that it was all I could do to move. Even 
the exertion of shifting from one side to the other of the 
boat on which I was travelling was enough to make me 
almost collapse with fatigue. 
We travelled great distances, going all day and the 
greater part of the night, with relays of men, on Septem¬ 
ber twenty-second and twenty-third. 
The Secundury was a stream with an average width 
of sixty metres, and in many places quite deep. It had 
a great many little springs and streamlets flowing into 
it between steep cuts in its high embankments, which are 
of alluvial formation mingled with decayed vegetation. 
< The banks almost all along were from forty to fifty feet 
high. We came across a large tributary on the right side 
of the river. It was evidently the stream to which we 
had first come on our disastrous march across the forest, 
and which I had mistaken for the Secundury. Beyond 
this river we came across some small rapids, of no im¬ 
portance and quite easy to negotiate by the large boats, 
although in one or two cases tow-ropes had to be used 
by the men who had landed in order to pull the boats 
through. 
On September twenty-third we passed some easy 
corrideiras. I had slept almost that entire day on the 
roof of the boat, in the sun. It did me good. Late in the 
evening, at about seven o’clock, we arrived at the hut 
of a trader, called Sao Jose, which was in the charge of 
a squinting mulatto — a most peculiar fellow. 
On September twenty-fourth I stayed at the trader’s 
house, spending the whole day drying thoroughly in the 
sun my note-books and negatives and repacking them, so 
that I could leave them at that spot until I could fetch 
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