938 MISSION OF SAN BORJA. 
marked with black spots. This people had not 
painted their bodies, and several of them had beards, 
of which they seemed proud, taking the travellers 
by the chin, and showing by signs that they were 
like themselves. In continuing to ascend the river 
they found the heat less intense, the temperature 
during the day being 79° or 80°, and at night about 
75°; but the torment of the mosquitoes increased. 
- The crocodiles which they saw were all of the ex- 
traordinary size of 24 or 25 feet. | 
The night was spent on the beach; but the suf. 
ferings inflicted by the flies induced the travellers to 
start at five in the morning. On the island of Gua- 
chaco, where they stopped to breakfast, they found 
the granite covered by a sandstone or conglomerate, 
containing fragments of quartz and felspar cemented 
by indurated clay, and exhibiting small veins of 
brown iron-ore. Passing the mouth of the Rio Pa- 
rueni, they slept on the island of Panumana, which 
they found rich in plants, and where they again 
observed the low shelves of rock partially coated 
with the vegetation which they had admired at 
Carichana. 
