Show saving the heat it Is recognized generally that lint tile losses of hent from frojm hare bare pipes and nal boilers ballera tire lire considerable yet et their real magnitude li 14 little appreciated tho nut dint the loss front from 1000 square feet of imposed exposed sur filce at WU pounds per sli sinare vire inch in mcfie pressure sure represents more than SW tons 0 coal annun lly Is n elent fur for tilt serinus seri nus consideration of tills ills sub hect tile alue of it gool good non hent conducting orr cover should therefore not lie hii n er looked one of these romr covers of 35 y per cent ant and 35 1 per rent introduced as n binder cinq been found very cry eff lelent according to n revl antly completed report by tile the mellon mc llon institute |