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Show FIND ASPHALT BY ACCIDENT M Discovered In Switzerland and Uwxs for Purpose of Extracting Valu- H able Bitumen- H Asphalt, though covering thousand H of miles of roads lu nil countries, was H discovered quite by accident. In tha H tnlddlo of tho last century It was found in Switzerland In Its uatural M stnto, and used for the purpose of ex- H trading tho valuable store of bitumen H it contained. In time It was noticed H that pieces of rock which fell from H the wagons, and were crunhed by tha H wheels, formed a very fine rood sur H face when half melted by tho heat oC M tho sun, H Au experiment was made nnd a road M ef asphalt laid In Pari. It was so M successful that the new road material' M beeamo adopted through all the blgj M towns of Europe. H All sorts of materials have boea M tried since, from rubber to seaweed, H It is very likely, In fact, that lo tha M futuro the streets of our big cltiea fl will bo paved with some form of rub H her mlxturo which will be practically H noiseless. Very extensive experiments H havo already been carried out with) H such a mixture. H In New York several streets are M paved with steel, nnd n steel road has) M been In use in Valencia, In Spnln, for M tho last 20 years. Perhaps the most M curious material for a road Is sea weed. This compressed Into solid M blocks, Is used to pave the streets of H Baltimore. These seaweed blocks are) f'siiifl bound with wire nnd dipped Into bolW H lng tar before being put to use. ''sllH |