[Entered at the Post Office of New York, N. Y.,as Second Class Matter. Copyright, 1900. by Munn & Co.) A WEEKLY JOURNAL OF PRACTICAL INFORMATION, ART, SCIENCE, MECHANICS CHEMISTRY AND MANUFACTURES, Vol. LXXXII.—No. 17. ee NEW YORK, APRIL 28, 1900. | 7 [$3.00 A YEAR. ESTABLISHED 1845. —— =< | as | a… … The Penstock and Receiving Tank. Vertical Section, Showing Receiving Tank, Compressing Pipe and Separating Chamber, THE HYDRAULIC SYSTEM OF AIR COMPRESSION.—[See page 263. |
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