In view of the above facts the explorer-traveller is advised to take with him the North American canoe if he intends serious work.  Two canoes would be a good arrangement for from five to seven men, with at least one steersman and two paddlers to each canoe.  The canoes can be purchased in two sizes and nested for transportation, an arrangement which would save considerable expense in freight bills.  At least six paddles should be packed with each boat, in length four and one half, four and three fourths, and five feet.  Other paddles from six and one half feet to eight and one half feet should be provided for steering oars.  The native paddler, after he has used the light Canadian paddle, prefers it to the best native make.  My own paddlers lost or broke all of their own paddles so as to get the North American ones, which they marked with their initials and used most carefully.

To each canoe it would be well to have two copper air tanks, one fore, one aft, a hand-hole in each with a water-tight screw cover on hatch.  In these tanks could be kept a small supply of matches, the chronometer or watch which is used for position, and the scientific records and diary.  Of course, the fact should be kept in mind that these are air tanks, not to be used so as to appreciably diminish their buoyancy.  Each canoe should also carry a small repair kit attached to one of the thwarts, containing cement, a piece of canvas same as cover of canoe, copper tacks, rivets, and some galvanized nails; a good hatchet and a hammer; a small can of canoe paint, spar varnish, and copper paint for worn places would be a protection against termites and torrential downpours.  In concluding the subject of canoes I can state that the traveller in South America will find no difficulty in disposing of his craft at the end of his trip.

Motors—­We had with us a three and one half horse-power motor which could be attached to stern or gunwale of canoe or boat.  It was made by the Evinrude Motor Company, who had a magneto placed in the flywheel of the engine so that we never had to resort to the battery to run the motor.  Though the motor was left out in the rain and sun, often without a cover, by careless native help, it never failed us.  We found it particularly valuable in going against the strong current of the Sepotuba River where several all-night trips were made up-stream, the motor attached to a heavy boat.  For exploration up-stream it would be valuable, particularly as it is easily portable, weighing for the two horse-power motor fifty pounds, for three and one half horse-power one hundred pounds.  If a carburetor could be attached so that kerosene could be used it would add to its value many times, for kerosene can be purchased almost anywhere in South America.