The great oven lay before us, pouring forth its torrents of heat from huge embers which were still burning fiercely on the underlying stones. These were indeed melting moments for the spectators. The pitiless noontide sun, and the no less pitiless oven-heat, both pent up in the deep well-like forest clearing, reduced us to a state of solution from which there was no escape. Despite this the photographers took up their stations, and others of us proceeded to make our observations. The _lovo_, or oven, was circular, with a diameter of 25 ft. or 30 ft.; its greatest depth was perhaps 8 ft., its general shape that of a saucer, with sloping sides and a flattish bottom, the latter being filled with the white-hot stones. Near the margin of the oven, and on its windward side, the thermometer marked 114°. Suddenly, and as if Pandemonium had been let loose, the air was filled with savage yells; a throng of natives surrounded the oven, and in a most ingenious and effective way proceeded to drag out the smouldering unburnt logs and cast them some distance away. Large loops of incombustible lianas attached to long poles were dexterously thrown over the burning trunks, much after the manner of the head-hunters of New Guinea when securing their human prey. A twist or two round of the loop securely entangled the logs, which were then dragged out by the united efforts of scores of natives, who all the while were shouting out some wild rhythmical song. This accomplished, the stones at the bottom of the oven were disclosed, with here and there flame flickering and forking up through the interstices. The diameter of the area occupied by those stones was about 10 ft., but this was speedily increased to a spread of 15 ft. or more by a second ingenious method. The natives thrust their long poles, which were of the unconsumable wi-tree (_Spondias dulcis_), between the stones at intervals of perhaps 1 ft. A long rope-like liana--_wa_--previously placed underneath the poles, and 1 ft. or 2 ft. from their extremities, was now dragged by scores of lusty savages, with the effect of spreading and levelling the stones. This done, our thermometer was suspended by a simple device over the centre of the stones, and about 5 ft. or 6 ft. above them; but it had to be withdrawn almost immediately, as the solder began to melt and drop, and the instrument to be destroyed. It, however, registered 282° Fahr., and it is certain that had not this accident occurred, the range of 400° would have been exceeded, and the thermometer burst.