A branch on the plateau long in operation is a 24 mile line from Uyuni to the Huanchaca silver mines, the road owned by the Mining Company. Another branch is now under construction from Machacamarca to Uncia, 57 miles, built by Simon Patiño, the wealthy owner of extremely rich tin mines at Uncia. Thirty-eight miles are in operation. =New Lines.= Under construction are two very important lines: one the Potosí-Sucre Railway, 105 miles, with 40 in operation; the other, the La Paz-Yungas Line of very difficult construction, passing over the mountain range near La Paz at an altitude of 15,338 feet and going down into the deep valley. One hundred and thirty-seven miles have been surveyed. The passage has been accomplished, the road opened to Unduavi, 16 miles, from which point it will be continued down the valley to Coroico, later to Rurenabaque, and some time to Puerto Brais on the Beni, the latter port being open to navigation all the year. Already a delightful road for tourist travel and useful for bringing fruit, vegetables, and other products to the La Paz market, has been constructed. With the completion of the road to Puerto Brais, a more speedy route for travel and freight to Europe will be attained. On account of the scarcity and high cost of coal this road is operated by electricity, for which the great fall of small streams gives ample power. On account of transportation difficulties and increased cost the completion of the Potosí-Sucre Railway has been delayed, but when this is realized the road will probably be continued northeast to Santa Cruz. From this city a road to Puerto Suarez on the Paraguay, now talked of, will come later. Bolivia has about 1400 miles of railway in service. A road to Santa Cruz from Cochabamba instead of Sucre is advocated by many. OTHER FORMS OF TRANSPORTATION =Roads.= Automobile roads are planned and being constructed to fill as far as possible present requirements, but in the rainy months, December to May, traffic is generally suspended. From Cochabamba to Sucre there is motor service for freight and passenger traffic, a more direct route than that from Potosí for persons in La Paz. From Potosí to Sucre a motor bus makes the journey in 12 hours. Another motor car road soon to be available is from Riberalta to Villa Church (65 miles), opposite Guajará-Mirím in Brazil, the terminus of the Madeira-Mamoré Railway. From Cochabamba autos run to Totora, also from La Paz to Achacachi, and over a spur of Illampu down to Sorata.