sophical and The metallic plate, E (Fig. 2}, has a lip projecting vernier pieces. The units of the additional scales are 10-32ds, 10-40ths and 10-48ths of an inch. The astronomical instruments, and First Assistant in the downward from its straight edge, to be placed against United States Coast… … struction of its mechanism large numbers about the charac- are a triumph in art. For such are the pecu- ter of wbhichthere has long been a fierce dispute, they 40, 400, 4,000, 40,000, &c., chains. The French liarities of its construction, though simple, that it en- being claimed by the botanists as…
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