tenant Gib- ties of the arms; and the light is increased ata small cost by bon’s barograph, or self-registering barometer is the usual apparatus: but it is stated by the inventor that the perfec- the oi! illumination, or the gas may be unused, and only the tion of this machine is such that it may… … cally. This pump is provided with valves of new and pe- resting upon a delicate scale ; as the water evaporates, the culiar construction, and also an improved packing for the vessel is lightened and rises, the slightest change being suffi- One advantage of thisarrangement is that it does not com-…
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