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that traversed a year ago. The heavy rains, however, together with 
the traffic of pack animals, had played such havoc that we were 
frequently compelled to dismount and finally it was necessary 
abandon our mounts before camp was reached just about 
dusk the following day. The camp was situated by a small 
stream on an irregular plateau lying between the mountain 
range and Rio Yaguani at an altitude of about 2,500 feet. It 
was in charge of Mr. E. La Londe, assisted by Mr. W. H. Bemis, 
whose kindly interest in our work I had experienced on former 
occasions. The camp was conducted according to American 
standard of comfort, in so far as that was possible under the 
adverse conditions encountered, and they did all that was in 
their power to aid me during the eight days that I remained 
there. The region is covered with a dense growth of shrubs and 
small trees, a few large trees occurring along the streams. There 
is also an occasional old pine tree, apparently the remnant of an 
ancient forest, younger pine trees occurring only along some of 
the mountain sides. There is little or no soil, but the surface is 
covered with a water-soaked mat of moss and humus; trunks 
and branches are generally enveloped in moss also. Beneath 
this is a layer of earthy limonite (iron ore) deposited upon the 
foundation of serpentine rock. The object of the camp was to 
ascertain the depth of this deposit and estimate the quantity 
of ore available. This was done by drilling to rock bottom at 
the intersection of parallel lines one kilometer apart running at 
right angles and as every third one of these was cut through the 
jungle, this afforded access to an otherwise inaccessible area. 
s the collecting was done along these trochas, but the 
mountain sides were examined on the way to the camp and again 
nm my return to the coast. A very rocky stream was also 
visited and its course examined for some distance, Incidentally, 
I got as far east as to site Camp San Benito, visited last winter. 
The little clearing was covered with a dense growth of fireweed 
(Erigeron) and small-fruited tomatoes. On this occasion Mr. 
La Londe accompanied me and we were overtaken by rain and 
nightfall several miles from camp on a rough and rocky trocha 
with the dismal prospects of spending the night in the bush in 
