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Scientific American, Vol. 28, No. 23 (June 1873) (1873)

leaf 4

An illustration from Scientific American, Vol. 28, No. 23 (June 1873), 1873, leaf 4
angements the thermometer tube is cropping out like a wall of quartz for miles. Besides having glish Mec.lw.nic, Fig. 1 is a side abruptly broken off, and from the column of mercury re- Fio. 2. been in all probability the source of many of the rich placers view of the invention; Fig. 2 a maining in… … however, been nearly reached, and were it not for the pro- piece of the tube to inclose 7° of mercury, 4° to 11°. The The seal cup is charged with tar, which permits the mov- vision of the Sutro Tunnel, which will cut and drain the lode able dip pipe to be lifted into or out of the main. It will be…

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