34° ON THE ABORIGINES
current is less rapid : they are guided by the side-wings of the weir into the narrow opening, from which they cannot find their way out. They are obtained by diving into the weir, and then catching them with the pisa (small net), or with the hand, or sticking them with a knife. In these cacoaries every kind of fish is caught, from the largest to the smallest, as well as river tortoises and turtles. The Indian generally feels about well with a rod before entering a cacoari, to ascertain if it con- tains an electrical eel, in which case he gets it out first with a net. The Piranhas, species of Serrasalmo, are also rather dangerous, for I have seen an Indian boy return from the cacoary with his finger bitten off by one of them.
The " Gerau," is yet on a larger scale than the Cacoari. It is used only in the cataracts, and is very similar to the eel-traps used at mills and sluices in England. It is a large wooden sieve, supported in the midst of a cataract, so that the full force of the water dashes through it. All the fish which are carried down by the violence of the current are here caught, and their numbers are often so great as to supply a whole village with food. At many of the falls on the Uaupe"s they make these geraiis, which require the united exertions of the inhabitants to construct them ; huge timbers having to be planted in every crevice of the rocks, to withstand the strength of the torrent of water brought down by the winter's floods.
All the fish not used at the time are placed on a little platform of sticks over the fire, till they are so thoroughly dried and imbued with smoke, as to keep good any length of time. They are then used for voyages, and to sell to travellers, but, having no salt, are a very tasteless kind of food.
Salt is not so much sought after by these Indians as by many other tribes ; for they will generally prefer fish-hooks and beads in payment for any articles you may purchase of them. Peppers seem to serve them in place of salt. They do, however, extract from the fruits of the Inaja palm {Maxi- miliana regid) and the Jara palm (Leopoldinia major), and also from the Carurri (a species of Lacis very common on the rocks in the falls), a kind of flour which has a saline taste, and with which they season their food. The Carurii, indeed, has quite the smell of salt water, and is excellent eating,
