Glacify

""Perhaps the boys were right in waiting for the snow to glacify," said the Traveller; " but we're in for it now, and nothing but bad luck will keep us from sleeping in Italy to-night," he continued reassuringly."

"We may remark here that perfectly dry snow cannot be glacified, and that in the formation of glacier ice the water necessary for its production comes from the melting of the superficial layers of snow by the sun ."