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Scientific American, Vol. 62, No. 21 (1890) (1890)
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ay be | are developed. The progress of the work can be ob- the annoyance of digging up the streets for long sawed trom hard wood. The lines and scrolls are dis- stretches with the view of locating leaks in the main. | served at any time by removing the board, B. continued in places, so as to cause… … portions may be semi-polished by briskly rubbing the entire surface with a piece of canvas or Brussels carpet. Fig, 5—A BASS-RELIEF IN LEAD, COPPER, OR BRASS, Fig. 6--FRAME AND FORM FOR MAKING BASS.RELIEF, © 1890 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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