Allen, Charles Ricketson, 1862- [from old catalog] · New York, H. Holt and company · leaf 160
NSION OF A GAS. 147 scale and measure the length of the column. Call this length L. Weigh a small dish; pour into it the mercury from the tube ; weigh the whole, and compute the weight of the mercury alone. Call this weight W. Then if J* = specific gravity of mercury,f the number of cu. cm.… … Next, draw a small globule of mercury about 1 cm. long J:into the tube, and get it near E by gently inclining thetube and keeping the finger over one end. This is used asan index. Attach the tube at E, and read the position ofthe inner end of the index on the scale F. Before readingit is advisable…
Physics
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