Show spelling by electricity A decided novelty in the electrical line is an illuminating speller which was used a at t the graduating exercises ot of the columbia university law class washington it is nothing more or less than a in machine which spells spell words swords and can even bo be made to construct entire sentences it consists of 0 any de desired number of box boxes 8 ranged side by side and made light tight tight except in front where there they are bovere covered d with letter transparencies cut from ordinary I 1 cardboard and having tissue paper 0 of f different color pasted over them in bac each h box isa is a IC candle power incandescent i lamp in the present instance the speller I 1 11 which bich was driven by a little one eighth beigh lit horse power motor makes about eight revolutions a ini minute nute it is a cylinder about fourteen inches in diameter around which are placed any riven given number of brass strips ps of different lengths and connected with a transverse strip which r runs u ns to the boxes As this cy clinder is revolved e d it throws the current into one box after the other flashing the light on and thus thu s spelling pelting out the words the sentence can call bo be left in illumination any time and can also be flashed backward by means of a reversing switch it would seem that buch a device as this might have many uses 0 of f great value besides enlivening the exercises of a graduating class new y york ork post |