The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 110
the proportion of l.; parts resin to 80 ofturpentine, and if the stone is to be of a clear while colour, add whitelead, zinc, and carbonate of lime—if any other colour is desired, add tothe last compound the dyes usually employed by painters. CLARKE AND VARLEYS PNEUMATIC PILE-DRIVER. The pneumatic… … air-pumps at present in use are very inadequate to the proper working ofthis powerful machine, and the air-pumps are only 10 inches diameter—•still, even with these, a vacuum is obtained, sufficient to raise the monkeyto the summit in one minute ; and, by opening a valve s below the pistoai, for…
Architecture · Civil engineering · Science
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