Show sterilization by aig light milk is row now being sterilized in pails by submitting it to lo the action of ultraviolet ultra violet rays thus avoiding the use of heat or cr treatment by chemical antiseptic substances it has aag w been known that light aitho without heat can destroy mic microorganisms micro organisms anisis ani sms and in 1893 3 it wag v as proved that from the ultraviolet ultra violet part of the spectrum there proceeded rays that had bad a bacterial effect it was further shown that glass stopped these rays which however passed easily through quartz it has taken over seven years to turn this knowledge to general use but now tn in paris an apparatus has been made by which ultraviolet ultra violet rays through quartz sterilize gallons of water an hour after much trouble the sterilizing of milk has been successfully cess fully accomplished although its opaqueness was mas at first a difficulty |