S DIAPHRAGM PUMP. Sharpening Needles by Electricity. We have just had a long conversation with two This pump is constructed on a novel principle. A practical application of electricity in an alto- inventors who called to consult us in relation to a There are no buckets or pistons in it, and the ne-… … ers. In some cases it is doubtless owing simply to a yellow plr,e lumber in the State of Georgia. There is change in the temperature of the air with which they cessary vacuum in the barrel is obtained by the al- a very great demand for these kinds of lumber in the are confined. Warm air will absorb…
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