Light and lighting . frmn \i>2 to 1*31 watts per square foolwas achieved. Nevertheless, the readingillumination was increased from 2*71 to3*24 foot-candles. Table I.—Strut Railway Illumination Data Bare rr-rsus Shaded Tungsten Lamps. ( Trans. L913.) B pi led Tungsten Tungsten lamps. lamps. N. f lamps 80 3-0 Can die-power per lamp 300 Watts per lamp 84-3 Total watts :w2<i Total generated lumens 2660-0 2142-0 ir floor 194-0 194-0 Watt- pa square fool 1-62 1-31 Average font oanriku -71 3 24 i ful lament 526-0 628-0 Utilization motor 2208° . 29 !{• 1 alive ell
Light and lighting . frmn \i>2 to 1*31 watts per square foolwas achieved. Nevertheless, the readingillumination was increased from 2*71 to3*24 foot-candles. Table I.—Strut Railway Illumination Data Bare rr-rsus Shaded Tungsten Lamps. ( Trans. L913.) B pi led Tungsten Tungsten lamps. lamps. N. f lamps 80 3-0 Can die-power per lamp 300 Watts per lamp 84-3 Total watts :w2<i Total generated lumens 2660-0 2142-0 ir floor 194-0 194-0 Watt- pa square fool 1-62 1-31 Average font oanriku -71 3 24 i ful lament 526-0 628-0 Utilization motor 2208° . 29 !{• 1 alive ellieienev °/o 100% In Toledo, experiments have been madewith several dinerenl systems, includingthe use of shaded lamp- on either side ofthe carriage, and the use of central semi-indireel lighting. It i- said thai the * Trans. Am. Ilium. Boo,, Deoember, I!»13. latter system is proving very popularwith the <:enerai public* It would be ofinterest to know if any similar experimentsare being made in this Fio. 5—Showing use of Reflectors on -idelights, in cars in Toledo, ( Similar problems occur in other publicvehicles and the write] i> g] that a good deal of elite] pi i-e i> being shown in the lighting of motor-buses, particu-larly by Mr. Clarkson on those oi theN tional Steam Cai Company. The
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