ll foreign matter is effectually trail rope of considerable weight, which trails as a expelled. Perhaps its greatest merit lies in being au- species of anchor over the ice. tomatically self-cleansing while working. The lower Fig. 1 represents the " Sivel" with its circlet of sup- large faucet is… … logs. The rails he used are round spruce poles, THE '•CRYSTAL" FILTER. properly six inches in diameter at the larger end, impurities, which would otherwise be pushed in and tapering down to half the size, and neatly joined at remain to defile the filter, are immediately separated the ends. The…
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