aggage along with us.

I saw that day another snake, called by the natives _duas cabecas_ (and
Tu Nou), or double-headed snake, because its marking gives that
impression at first sight.

After leaving Goyabeira the thick growth continued over several ridges,
the highest of which was 2,950 ft., with streams between at elevations
respectively of 2,630 and 2,700 ft. I noticed in the forest some
beautiful paneira trees, with their trunks enlarged near the base--a
regular swelling all round. One of the peculiarities of this tree was
that it produced a kind of vegetable wool contained within fairly hard
capsules.

That was indeed a day of surprises for us. As we were proceeding over
another hill range between two streams (elev. 2,850 ft.), we saw at last
some butterflies of a gorgeous lemon yellow, some of a rich orange,
others of red and black, great numbers of pure white, and some huge ones
of an indescribably beautiful metallic blue colour. There were swarms of
them near the water. So unaccustomed were they to see human beings that
many settled on my white coat and on my straw hat and came along
undisturbed for long distances upon my person. They were so beautiful
that I had not the desire to kill them, even for the sake of bringing
back a valuable collection. It would have been easy to capture them, as
you could touch them several times with your fingers before they would
fly away. One butterfly particularly took a great fancy to my left hand,
in which I held the reins of my mule, and on which it sat during our
marches for several days--much to my inconvenience, for I was afraid of
injuring it. It would occasionally fly away and then return. At night
while we were camping I transferred it to my straw hat, on which it
quietly remained until the next morning. The moment I had mounted my
mule, the butterfly would at once fly again to my hand. This great
affection was due chiefly, I believe, not to any magnetic attraction, but
merely to the delicately scented soap which I used in my morning bath,
and which greatly attracted the butterfly.

On many occasions on that expedition I had similar experiences with
butterflies.

For the first time, too, I perceived that day a few _colibris_--tiny
humming-birds of wonderful plumage.

Twenty-three kilometres from Goyabeira--after many ups and downs along a
deep-channelled, slushy trail, and having crossed over several swampy,
troublesome streamlets--we suddenly emerged into a mar