The London, Edinburgh and Dublin philosophical magazine and journal of science . 346 Dr. H. Morton on the Flum-escent Relations of certain Trans. 1852, Part II. p. 469), and also used by Becquerel (seeLa Lumiere, vol. i. p. 335, and Comptes Rendus, vol. 297), as also by Hagenbach. Figure 2 hardly needsany explanation, except that A Fig-2. is a porte-lumiere with a lensat B, and a small tank of ammo-nio-cupric sulphate in front, C arevolving stand to hold objects,and D a spectroscope. Observations on the FluorescentSpectrum.—All the forms of an-thracene except the last show,when observe
The London, Edinburgh and Dublin philosophical magazine and journal of science . 346 Dr. H. Morton on the Flum-escent Relations of certain Trans. 1852, Part II. p. 469), and also used by Becquerel (seeLa Lumiere, vol. i. p. 335, and Comptes Rendus, vol. 297), as also by Hagenbach. Figure 2 hardly needsany explanation, except that A Fig-2. is a porte-lumiere with a lensat B, and a small tank of ammo-nio-cupric sulphate in front, C arevolving stand to hold objects,and D a spectroscope. Observations on the FluorescentSpectrum.—All the forms of an-thracene except the last show,when observed as above, the samespectrum, which seems to me alsoto correspond as nearly as onewould expect with the drawing given by Becquerel (in La Lumiere)of a hydrocarbon having the colour of the uranium salts and ob-tained from Fritzsche, w^ho first investigated what we now callanthracene. This spectrum is shown in fig. 3. Fig. 3. ]-.
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