Show COST eos 01 OP LIGHTING Li U UIn In a communication to Municipal en engineering Enit it Mf Mt t W T 1 Black Blaek Blackburn burn irn MI city dt engineer r of Charleston hulton HI Alva alvea tome some Interesting ID I figures about the lb cost coet of 01 system of ot electric and street He u A says While there tre was waa hot I ut little I Information obtainable la ta reference to the tile first t Installation from fro th tb the annual bill Mil I have hav concluded that the coal coet of operating 75 harps was wan something about bout M IM per lamp and from Indicator sari card Wren taken from engine just previous to IQ the cheats change cia to enclosed are arc 1 I let get t the th following tollo 71 Tt lamps lamPe required power The arc rc In Installed Installed stalled lIed In place piaN pl e of 01 th the open ope area rea com cocci co coto to operate l Ii per tor lamp and an from eme engine meine aa as abu b tit lU la lamp lampa were WI operal operated ed Id with Ith po power er r While the magnate system which ha h taken tn the Ilace llla of 01 the U enclosed nn nr stem tm tau has been baen In ope operation allon only foul month months from tram the monthly I hi report I 1 de dp deduce duce d u that thi Ibl lamp lump while being belt let per pert vent mat n opt t or giving vi It 0 per vent cent nt ppe wt sly ealy 7 cost ant co M Ml per lamp lull per year r and there are operated from the engine ague tl II lamps with horse power From Froan the foregoing we C must meet muston on iad that t the ha bas Improved moat meat wonderfully by b age or that t i new n lighting 1 system 01 la I a perfect sue suc sueae ae I J now haw have 10 1 lamps lamp In Ita service aad aU contemplate or this t is Ul us Naps with same O |