e instruments. The laboratories are in the cen- skill as well as knowledge of practical physics. The BY HERBERT T. WADE. We described last week the method by which stan- present staff of the Bureau is headed by M. J. Reng ter of the building, surrounded by a corridor on all dard measures of length… … which must be absolutely uniform and cuts off the main gas supply, though a Laboratory of the International Bureau of Weights and Measures. Section unvarying. While a uniform currency small cock is always open, and permits a Showing General Construction. The Method of Mounting the Instru- can be…
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