The fireside university of modern invention, discovery, industry and art for home circle study and entertainment . Fig. 82. PROP. JOLLYSAPPARATUS FOR DE-TERMINING THE SPE-CIFIC GRAVITY OFMINERALS. 230 THE FIRESIDE UNIVERSITY. and Molecular theories are perhaps the most ingenious things that man has done on the earth. How did the theories arise ? Certain things had already becomeevident in Chemistry. If water,air, salt, sugar, or any other compoundwere taken apart, it was always foundto give exact proportions of theElements that made it. By weighing:all the Elements that could be heatedinto a g
The fireside university of modern invention, discovery, industry and art for home circle study and entertainment . Fig. 82. PROP. JOLLYSAPPARATUS FOR DE-TERMINING THE SPE-CIFIC GRAVITY OFMINERALS. 230 THE FIRESIDE UNIVERSITY. and Molecular theories are perhaps the most ingenious things that man has done on the earth. How did the theories arise ? Certain things had already becomeevident in Chemistry. If water,air, salt, sugar, or any other compoundwere taken apart, it was always foundto give exact proportions of theElements that made it. By weighing:all the Elements that could be heatedinto a gaseous form and still weigh-ed, it was determined that Hydrogenwas by far the lightest, most of theElements being from twenty toheavier, but all in different Fig. 83. WESTPHALS APPARA-TUS FOR OBTAINING THESPECIFIC GRAVITY OFLIQUIDS. two hundred timesThus Hydrogen offered a standard of weight at i, and
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1902
