is worth remembering. HINTS PO CORRESPONDENTS. (platinum chloride) to dryness. The dried mass may NEW BOOKS ETC. TO INVENTORS. INDEX OF INVENTIONS For which Letters Patent of the United States were Issued for the Week Ending SEPTErIBER 26 1899. AND EACI1 BEARING TBAT DATE. Brick making machine El. Obermeyer 638891 - heater. Water heater. (Continued on page i38), scientific american, 1899-10-07
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