. Manual of physico-chemical measurements. vision is reached. The readings ofthe burette give directly the positions atwhich the contents reckoned from the zerodivision are equal to 2, 4, 6, 8 . . cc,and the correction at these places is the difference between thenominal and the actual value. For instance, if 0, 198, 397, 599,801, 1004, etc., are the values actually read off, the corrections are respectively -i-0-02, -1-0-03, +0-01, - Q-Ol, - 004,. etc. These corrections are written down on a narrow ^^•^lij*! strip of stiff paper which is fixed up beside the burette ^ when in use, so that each
. Manual of physico-chemical measurements. vision is reached. The readings ofthe burette give directly the positions atwhich the contents reckoned from the zerodivision are equal to 2, 4, 6, 8 . . cc,and the correction at these places is the difference between thenominal and the actual value. For instance, if 0, 198, 397, 599,801, 1004, etc., are the values actually read off, the corrections are respectively -i-0-02, -1-0-03, +0-01, - Q-Ol, - 004,. etc. These corrections are written down on a narrow ^^•^lij*! strip of stiff paper which is fixed up beside the burette ^ when in use, so that each correction appears at its proper place. Every number read off is then corrected before being noted down. The intermediate values are got by simple interpolation. For the purposes of physical chemistry, we use almost exclusively burettes of 20 to 30 cc. capacity divided into tenths; the hundredths are best readings are obtained with burettes furnished on theback with a black enamel strip on a white ground, as sug^sted by.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherlondo, bookyear1894
