If this theory be tenable, the curves example it would seem desirable to examine the spectra in a central area of the cathode plate, rather than from of comets’ tails and all the rapid changes in form and of electrical discharges in rarefied gases free from con- its entire surface. In the side view… … um above, it which, it seems Fig. 2.—CATHODE BEAM, SIDE VIEW, should present SHOWING RESEMBLANCE TO SIM- to me, is sug- about the col- PLE COMET. gested by my ors observed in photographs, and may assist in solving the problem of rounding the nucleus or head, and both views suggest the order…
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