...chloride. Fox Talbot, in 1826, wrote : " A particle of muriate of lime on the wick of a spiritlamp will produce a quantity of red and green rays for...evening without being itself sensibly diminished." Swan traced the source of the peculiar orange ray which appears in the light of almost every flame...

...suffers no diminution in consequence. Thus, a particle of muriate of lime on the wick of a spiritlamp will produce a quantity of red and green rays for a whole evening withont beeng itself sensibly diminished)." Er sagt weiter, bei der Verbrennung von Schwefel mit Salpeter...

...of cotton, it gives a considerable quantity, and that for an unlimited time. And I added that I had found other instances of a change of colour in flames,...evening without being itself sensibly diminished. Mindful of these experiments of 1826, when a few years ago I wished to examine the spectra of thallium...

...suffers no diminution in consequence. Thus a particle of muriate of lime on the wick of a spirit-lamp will produce a quantity of red and green rays for...evening without being itself' sensibly diminished"*.) In a later portion of the memoir he attributes the yellow line in one place to the presence of soda-salts,...