Show it was lon thought that tha water from melted enow was the purest of all water thia idea has been proven incorrect as the reverse is the case siow is really a purifier of the atmosphere attracting tr from it as it falls various impurities puri ties and these are found in the snow water some aa lead and antimony condense on union others like gold and silver expand this as well as the heat given out in alloying especially when brass and bronze are conned proves that an alloy is not a mere mechanical mixture but a trae chemical compound |