The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 345
ts may be thus expressed :— Silica 68 6S percent. Lime So 8J percent. Alumina, oxide of ircn, &:c 235 2SJ pec cent. 100 100 Or the silica is about eight times as much as the lime, and Ihe sand must,as above explained, have been in greater proportion. • (Signed) John Davies. *^* We have read the… … 8-15.] THE CIVIL ENGINEER AND AKCIIITECTS JOURNAL. S97 REGISTER OF NEW PATENTS. (Imltr this head arc given abslrocs of the spcciecatioiis of nil the most imporlnntpatents as they arc enrolled. Any additional information required ns to any paent, thesame may be obtained ty apulung to Mr. LAXTON at…
Architecture · Civil engineering · Science
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