Issue 23 and Volume 38.

FILTERS FOR FARMS. For farmers who cannot afford a better style of filter a very good one for surface water can be made of any suitable receptacle, such as a tank or water butt, on the bottom of which should be laid fairly large pebbles or broken stones to a depth of six inches, then over this a six-inch layer of course gravel; over this nine inches of fine gravel; and, finally, a layer of clean, sharp sand to a depth of ten or tewelve inches. A top layer about three inches of fresh sand added from time to time will keep the filter in good working order throughout the season. But it should be thoroughly cleansed and fresh material provided at least once a year. The water for use should be run off from the bottom of the filter by means of a draw tap or syphon into another…

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