The Philosophical magazine; a journal of theoretical, experimental and applied physics . d to 0*1 of itsoriginal volume; the residue, mixed with half its volume of oxy-gen, detonated, leaving a minute residue, apjiarently gas from negative pole, 23 times the volume of the positivecontracted to OLo of its volume: the residue contracted veryslightly on the addition of hydrogen. 2nd. Gas from positive, 25 volumes contracted to 0*7 of itsvolume. From negative, 1 volume contracted to 04; the residuesmixed contracted again to 0*7; and this residue, mixed withhalf its volume of oxygen, d
The Philosophical magazine; a journal of theoretical, experimental and applied physics . d to 0*1 of itsoriginal volume; the residue, mixed with half its volume of oxy-gen, detonated, leaving a minute residue, apjiarently gas from negative pole, 23 times the volume of the positivecontracted to OLo of its volume: the residue contracted veryslightly on the addition of hydrogen. 2nd. Gas from positive, 25 volumes contracted to 0*7 of itsvolume. From negative, 1 volume contracted to 04; the residuesmixed contracted again to 0*7; and this residue, mixed withhalf its volume of oxygen, detonated, leaving only a very minutebubble. 3rd. Instead of two coated wires, one coated wire was em-ployed, and the opposite terminal consisted of a strip of platinumfoil, \ inch width and 1 inches length, exposing consequently,reckoning both sides, 2 square inches of surface. This strip was attached to a platinum wire, which was sealedinto a glass tube, the extremity of the platinum foil being ^ aninch from the orifice of the tube, so that no gas could escape.(See fig. 2.) Fij;. * Phil. Mag. Aug. 1841. Phil. Trans. 1847, \>. !• 206 Mr. W. R. Grove on some anomalous cases With the coated point positive, the platinum plate negative,03 c. i. of gas was collected from the point; a minute bubbleonly appeared in the tube containing the strip or plate; the gascontracted in the eudiometer to 0*7 of its volume ; the residue,mixed with half its volume of oxygen, detonated, leaving a verysmall residuum. 4th. The converse experiment, i. e. coated wire negative, platepositive, 0*3 c. i. of gas was collected from the negative coatedwire, and, as in the former case, only a minute bubble appearedin the tube containing the plate, and far too minute for analysis;the gas from the negative point contracted to half its volume inthe eudiometer; the residue was hydrogen as before. 5th. In the above experiments I had used from 2 to 3 oz. ofdistilled water, with a few drops of sulphuric acid
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