simplify and generalize outlines, and being impelled by inherent mental dispositions to form rythmical repetitions and series, may be led to produce similar signs and symbols. * * * Some miles from Encaramada, there rises, in the middle of the savannah, the rock Tepu-Mereme, or painted rock. It shews several figures of animals and symbolical outlines which resemble much those observed by us at some distance above Encaramada, near Caycara, in 7° 5′ to 7° 40′ lat., and 66° 28′ to 67° 23′ W. long. from Greenwich. Rocks thus marked are found between the Cassiquiare and the Atabapo (in 2° 5′ to 3° 20′ lat.), and what is particularly remarkable, 560 geographical miles farther to the East in the solitudes of the Parime. This last fact is placed beyond a doubt by the journal of Nicholas Hortsman, of which I have seen a copy in the handwriting of the celebrated D’Anville. That simple and modest traveller wrote down every day, on the spot, what had appeared to him most worthy of notice, and he deserves perhaps the more credence because, being full of dissatisfaction at having failed to discover the objects of his researches, the Lake of Dorado, with lumps of gold and a diamond mine, he looked with a certain degree of contempt on whatever fell in his way. He found, on the 16th of April, 1749, on the banks of the Rupunuri, at the spot where the river winding between the Macarana mountains forms several small cascades, and before arriving in the district immediately round Lake Amucu, “rocks covered with figures,”--or, as he says in Portugese, “de varias letras.” We were shown at the rock of Culimacari, on the banks of the Cassiquiare, signs which were called characters, arranged in lines--but they were only ill-shaped figures of heavenly bodies, boa-serpents, and the utensils employed in preparing manioc meal. I have never found among these painted rocks (piedras pintadas) any symmetrical arrangement or any regular even-spaced characters. I am therefore disposed to think that the word “letras” in Hortsmann’s journal must not be taken in the strictest sense.