II. On the spectrum of water. No. II

Abstract

In our former communication on the subject of the water spectrum ("Proc. Roy. Soc.," vol. 30, p. 580) we stated that the spectrum we then figured did not by any means exhaust the spectra of flames we had observed, but it was as much as we had at that time been able to trace to water as its cause. We had, in fact, noticed in the spectrum of coal-gas and hydrogen-flames a still more refrangible but less intense series of lines; and we have since observed that this second series is produced under the same circumstances as the first, and we therefore ascribe it to the same cause, namely, the incandescent vapour of water.