A Traveling Sidewalk

Tno imperativo demand in largo oities for some mi :n:s of tru sling quickly point te poiiit . ■ ...vci ctéii;in for Bscuring rapid transit. The ' uost curious that lias yet been projected s a pía, already patentad, for a moving idewilk, whioh Bhall be iu perpetual moiuii, carrying pede3triíins at the rato of' en milos an hour, a s;;ü'd which they au increase by tlioir wholo power oí' inlependent motion The partioulara of the plan are briefly ;hese : It is proposed to liavc a serias oi' tillara along the outor vergí; of the otirbstones rising to the height of the second story of ordina y buildings. Space bewl'cii the tops of these pillara and the luildings ajacont ia tjbe a sidewalk, onelalf of which is movable and the othor station ary. It. is to be reaohed at every cornor by a stairway. On the inner or stationary valk pedestrians can pass back tnd forth at theii leisure, entering stores ni'l offices whiob might then oceupy the second story of the building, and be on;ered ituiuediately froin the street. The )thcr half of the walk made a sot of l.n;ice work üiul moving on sinall trucks which are boneath tho surfaco and alto;ether concealed front view, is propelled it the rato of ten miles an hour by enjines beneatU thu lurfaoe ot' the ground at such intervals os m y lie nccos?ary to secure tho requisito power. The sidewalk s moved by t'riotion rollers, worke 1 Jupón yy shat'ts which pass through tho upright ill:ivs, and on one sido of the stroet passe3 up, and on the other down, continually ni:;lit and day. (;i this moving roaclway, pedestrians niay stand or oooupy tho nunn-ruus chaira or settees theroin prpvided, and be traveliag uward their destin&tion attbe cate often miles an hour, ir, it'w incliued, can walk at full spoed in tho samo direotion, thereby adding tour or ñvo miles an hour to thcir rato of progresa, Tlio most ingenious part of tho whole jontrivance is the devico for gettiug on and oii' this moving pat'uvay. Thepedeatrian mounta to tlie stationary walk, and 'i. Q ii' hu wereto step trom this to tlii moving one, he would ot' courso bc suddonly Soored. To prevent such a gatastrophe, there is a i ri - . t'.seatsingoniously contrived to movo partly on the muvalio and partly on the stationary walk. These are stopped by applying a brako, which releases thom from the moving platform and allows them to run on their own tracks on tho -tationary ono, where they are readily stopped. The passengar takos his soat, the conductor' takes tare, and tho br.ikn is rovoraed, and immediately tho seat moves on, and the travelei can leave it without tho risk oi' bivaking his neck. All this is very curious and novel, but how about its practicability 'i Vo are told that Boveral competent engineors havo cxmiincd into the plan and pronounco itontirnly i'easiblo and fax los= exponsive than any that h-is been hf before lor carrping citizons rapidly up an.l down tijv.-ii, or back and forth betwocn distont points. Tho mach will woik wilh very littlo noise, and that wiü be oontmuoug, an i therofore seareoly notioeable ; thore will be no danger of accident, and the contrivan: e can lic put up in any street, long or short, whero it may bo reouired. It is Baid that an at tempt is to bo made vèry bood to demónstrate the feaeibility of this schemo, probably on Chamberí etreet, from Pavonia Perry to Broadway. The late Prof. Wm, Gibson ased to relate that while going through thc ward of a hospital with Velpeau, that surgeun brought hini to the bodsido of two men who were under treatmentforsomeglight fracture. "Wouldyou bclicvo it," 8aid Velpeau, " thrse men have made a living for the last flfteen yeara by being knocked down ana run over! Arhen th' a light vehielo driyen hy some weilthj person coming by, they step across the street, and ure sure to bo run over, piulced u), and carriod to some hospital, and tliou thuy suc for damages. When theii money becoinus exhaiutod, they begin again. Nearly every bono in their bodies have been broken."