Show chemistry practical and theoretical young gentlemen said the lecturer in chemistry coal exposed to tho elements loses 10 per cent of its weight and heating power this is duo to tho action of tho alkali constituents of but what if there is a dog sleeping near tho coal professor none of your levity young man this is a serious matter what father thought when 7 per cent of his coal pilo disappeared during three nights of exposure then ho asked my addico as a student of chemistry and I 1 told him to buy a dog he bought a dog with bay window teeth and the in his upper lip and now we dont lose 1 percent of our coal a month the kind of a practical chemist I 1 am now go on with your theory exchange |