Show should compressed air prove to be the efficient and economical motor of the future for street railroads it will have the curious effect of superseding electricity before it Is fairly out of the experimental stage it Is less than ten years vears since electricity began to be applied to any large extent in the propulsion puls lon of street cars and under the overhead trolley system it has had a rapid development the storage battery has not attained success in this held field and the underground trolley has been applied only to a limited extent but vw hideous tangle of overhead wires has overspread cities like it a cob 11 steb eb and reached out into the surrounding country if it Is to be displaced that will in itself be an inestimable blessing but we cannot say that electricity tins has reached its full development ns as a motive power |