Show inventions that would make deviser wealthy among the 20 ways of making a million dollars revealed by roger W babson ahson li economist in the forum are 1 pills for plants condensed form of fertilizer to do 10 away with wasteful spreading reading Bp 2 A new automobile to which will use a rotary engine gi go adenise as well as forward a and nd backward tor for convenience in parking 3 A foolproof helicopter to lift un no airplane directly off the earth enabling the aviator to light 01 on city streets street and building roofs 4 gliders for children BOS will III fly around their yards as safety safely as they now play in their sand piles 5 3 A light that 1 will I pierce tog fog something greatly needed in the field of al navigation 6 talking books that Is pages that may lie be fed into a machine and save the bother of rending reading 7 flexible unbreakable and bulletproof ganss 8 cold light to do away with 95 per cent of electric current now wasted on resistance to create glow 9 mahogany lumber from native hardwood trees by inoculating them with dyes and chemicals |