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APPENDIX. 
As connected with the languages of these people, we may 
mention the curious figures on the rocks commonly known as 
picture-writings, which are found all over the Amazon dis- 
trict. 
The first I saw was on the serras of Montealegre, as de- 
scribed in my Journal (p. 152) . These difiered from all I have 
since seen, in being painted or rubbed in with a red colour, 
and not cut or scratched as in most of the others I met with. 
They were high up on the 'mountain, at a considerable dis- 
tance from any river. 
The next I fell in with were on the banks of the Amazon, 
on rocks covered at high water just below the little village 
of Serpa. These figures were principally of the human face, 
and are roughly cut into the hard rock, blackened by the de- 
posit which takes place in the waters of the Amazon, as in 
those of the Orinooko. 
Again, at the mouth of the Eio Branco, on a little rocky 
island in the river, are numerous figures of men and animals 
of a large size scraped into the hard granitic rock. Near St. 
Isabel, S. Joz^ and Castanheiro, there are more of these 
figures, and I found others on the Upper Bio Negro in Vene- 
zuela. I took careful drawings of all of them, — which are un- 
fortunately lost. 
In the river Uaupes also these figures are very numerous, 
and of these I preserved my sketches. They contain rude 
representations of domestic utensils, canoes, animals, and 
human figures, as well as circles, squares, and other regular 
forms. They are all scraped on the excessively hard granitic 
rock. Some are entirely above and others below high-water 
mark, and many are quite covered with a growth of lichens, 
through which however they are still plainly visible. (Plates 
VII. and VIII.) Whether they had any signification to those 
who executed them, or were merely the first attempts of a 
rude art guided only by fancy, it is impossible now to say. 
It is however beyond a doubt that they are of some antiquity. 
