{Entered at the Post Office of New York. N. Y., as Second Class Matter.] “NEW YORK, MARCH 31, 1883. Vol. XLVITI.—No. 1 Be 3.20 per Annum. [* {NEW SERIES.) (PostaGE PREPAID.) … use in two or three months, and carrying with it all of the slit and impurities that have We shall therefore speak in this article of sand as the been retained in the sand filtering agent employed. while filtering, and discharg- “The Hyatt filter No. 1 is ing them through the central especially…
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