OCR Text |
Show ML. DW I SUMV BBBJ , . . Radjum to lllumfnat gaoav BBBfl -4oponltIonaftfiitTTno scorns to fBjji BBV , .x-"y vih&i''w" wjll play an lmportnntB?-iK- BBfl " fare. - hL BBBj. In gun sights, leveling "rVfT( h ..., and telescopes tuoro s whaTsjJI JjK BBWT a "fiducial" mark, which Is usotf-- BBfl - obtain a faithful result. JJJ" BY Thoso marks of courso are useless BBJ in tho dark, and, though many wa? B. of Illuminating them havo been trhS J B" nothing ha8 proved satisfactory. BBfl ? Mr. Andrew A. Common of Eaton- BBfl . riso Fallng, was tho first to attempt BBfl to solvo tho dlfllculty by tho use of BBfl I radium, and his experiments wero so BBfl - -J successful that ho applied for n pat- ient. Unfortunately, ho did not livo to havo It granted, but tho comploto h i specifications submitted by Mra. Com- M I v mon, Ids widow nnd executrix, havo H ' Just boon accoptcd. London Dally |