By way of experiment the Governments will bring about at once, the construction of 2 economic railway systems, 1º starting from Antiga Sauzel on the left bank of the river Xingú and going up the valley as far as the river Careahy, with a branch leading to the river Tapajóz, whose valley it will follow until the river S. Manoel and with other sub-branches; 2º starting from the confluent of the Rio Negro with the Rio Branco and following the valleys of Seruiny and the Caratimani passing over the water-shed and going on until it terminates in the Alto Uraricoera, with 2 branches, the one for the Alto Paduary and the other for the town of Boa Vista. The necessary improvements to be made towards effecting the navigability of the rivers at all seasons of the year, by steamers drawing up to 3 feet of water, of the Rio Negro, between S. Isabel and Cucuhy, on the Rio Branco from its mouth as far as S. Joaquim; of the river Purús between Hiutanahã and Senna Madureira, and of the river Acre from its mouth as far as Riosinho de Pedras, will be contracted for by public-tender or by some public company which can prove itself sufficiently capable for the carrying out of the same. The maximum time-term for the termination of the improvements will be 7 years. As supplementary measures, the exemption from taxes is conceded to the floating material of whatever kind destined to fluvial navigation in the valley of the Amazon and floating depots for the supply of coal and oil-fuel will be established at different points of the river Amazon, its affluents and sub-affluents. The establishment of these depots and the business of supplying the combustibles will be done by signed contract, with the Minister of Agriculture, after the competition by public-tender, the concessioner enjoys besides other favors, exemption from import-duties for the floating material and for the combustible material imported as also full exemption from all State and Municipal taxes by reason of the object of his contract being considered a federal public service. * * * * *