Note 518 — Chapter XIX · THE MANUFACTURE OF MANTLES FROM COTTON AND RAMIE
Reading edition
Numberless theories have been advanced to account for the extraordinarily high light-emitting power of this particular mixture of thoria and ceria. An account of these would be beyond the province of the present work; the reader who desires to pursue the subject should consult the interesting work of Dr. H. W. Fischer, Der Auerstrumpf, Ahren’s Sammlung, 1906, vol. xi. Vide also Lévy, L’Éclairage à l’incandescence par le gaz, Paris, 1910, Ch. II; and Foix, Thèse présentée à la Faculté des Sciences de Paris, Paris, Gauthier-Villars, 1910.
The diagram is after Drossbach, J. Gasbel. 1898, 352.