whether land may be taken for national parks or forest reservations except in the Territories, where title still remains with the Federal government. But the State's power of eminent domain is unlimited, although it began only with the towns or counties taking roads for highways, and cities and towns appropriating lands for schools and other public buildings. Probably the only serious addition of a wholly public use is covered by the general expression, parks and playgrounds; but the analogy of the highway led to the taking of land under eminent domain for railroads, when they were first invented, then for street railways, then for telegraph, telephone, and electric-light lines, underground pipe-lines or conduits of all sorts, and finally, for drains, sewerage districts, public, and often private irrigation purposes. Most of the more complex State constitutions define at great length to the extent of some twenty or thirty paragraphs just what purposes shall be considered a public use under eminent domain. In the absence of such definition, or without such definition, the number of such uses is being enormously increased by statute. Thus, reservoirs, storage basins, irrigation canals, ditches, flumes, and pipes for water drainage, or mining purposes, working mines, as dumps, hoists, shafts, tunnels, are made a public use by the constitutions of the arid States, Idaho and Wyoming. So as to water only in Montana, but in Idaho also to any other use "necessary for the complete development of the material resources of the State or the preservation of the health of its inhabitants."[2] And even by private parties, land may be taken for ways of necessity in many States, and for drains, flumes, and aqueducts by the constitutions of the arid States. [Footnote 1: Book I, p. 139.] [Footnote 2: These provisions are collated in "Federal and State Constitutions," p. 159.]