Show 0 0 D ROAD FIND ASPHALT BY ACCIDENT discovered in switzerland and used for purpose of extracting valuable bitumen asphalt though covering thousand of miles of roads in a all countries WHO discovered quite by accident in the middle ot of the last century it wa found in switzerland to in tta its natural state and used for the purpose ot t extracting tr the valuable store of bitumen it contained in time it was wa n noticed that pieces of rock which fell from om the wagons and were crushed by 11 abi wheels formed a very fine road nor ur face when half melted by the beat of the sun an experiment was made and A rood of aspli asphalt alt laid in parts iaria it was so successful that the new road material became adopted through all the big bf towns of europe all sorts of materials have been tried since from rubber to se seaweed it Is very likely in fact that in the future the streets of our big cities will be paved with some form of rubber mixture which will be practically noiseless very extensive experiments have already been carried out with s uch such a mixture in new york tork several streets ire are paved with steel and a steel road has baj been in use in valencia in spain for the last 20 years perhaps the most curious material for a road Is seaweed this compressed into solid blocks Is used to pave the streets street ot of baltimore these thes e seaweed blocks ars ara bound with wire find and dipped into boiling tar before being put to use |