4200 Heat and Light 



from flame. Conroy, (Sir) J. B. S. P. 47 (1899) 



55-. 

 identity. Preehtl, J. J. Gilbert A. 20 (1805) 



305- ; 23(1806)474-. 

 . Ermerins, J. G. Amst. Vs. Ak. 7 (1858) 



81-. 

 . Abria, 0. Bordeaux Act. Ac. Sc. 27 



(1865) 499-. 

 . Tyndall, J. B. I. P. 6 (1872) 417-. 



of agents which produce, theory. Melloni, 

 M. C. B. 1 (1835) 503-. 



mathematical theory. Colnet-d'Huart, de. 



Lux. I. Pb. 21 (1891) 125-, I-. 

 non-identity. Baudrimont, A. Bordeaux Mm. 



S. Sc. 3 (cah. 2) (1865) 313-. 



(Baudrimont). Abria, 0. Bordeaux Mm. 

 S. Sc. 4 (cah. 1) (1866) 77-. 



of same refrangibility, identity. Studnicka, 

 F. J. Wien SB. 44 (1861) (Ab. 2) 289-. 



relationships. Martens, M. Liege A. Ac. 

 (1819-20) 34 pp. 



solar, separation. Herschel, (Sir) W. Phil. 

 Trans. (1800) 255-. 



, (Herschel). Leslie, J. Nicholson J. 4 



(1801) 344-, 416-. 



, (Herschel's researches, Leslie's criti- 

 cisms). Benzenberg, J. F. Gilbert A. 10 



(1802) 356-. 



, . Wiinsch, (Prof.) . Berl. Gs. Nt. Fr. 



Mg. 1 (1807) 185-. 

 , (Wiinsch). Sitter, J. W. Gehlen J. 



6 (1808) 633-. 

 , (Herschel). Goethe, J. W. von [with 



remarks by Ritter, J. W.]. Gehlen J. 6 (1808) 



719-. 

 , (Wiinsch). Heinrich, P. Gehlen J. 6 



(1808) 729-. 

 , (Herschel). Eeade, J. Tilloch Ph. Mg. 



45 (1815) 422-. 

 from terrestrial sources. Powell, B. Thomson 



A. Ph. 8 (1824) 81-; QJ. Sc. 19 (1825) 45-; 



Thomson A. Ph. 9 (1825) 359-, 401-. 



intensity measured by expansion of chlorine. 



Richardson, A. L. Ps. S. P. 11 (1892) 185- ; 



Ph. Mg. 32 (1891) 277-. 

 internal. Stokes, G. G. [1861] E. S. P. 11 



(1860-62) 537-. 

 invisible, combustion due to. Tyndall, J. [1865] 



E. I. P. 4 (1866) 329-. 

 , of electric arc. Tyndall, J. E. S. P. 14 



(1865) 33-. 

 light, forms and sources. Brugnatelli, L. V. 



Gilbert A. 4 (1800) 438-. 

 , heat and chemical radiations, identity. 



Melloni, M. C. E. 15 (1842) 454-. 

 , , . Brasack,F. Halle Z. Nw. 



25 (1865) 567-. 



due to heat and electricity, similarity. 

 Lacroix, . Fr. Cg. Sc. 28 (1861) 479-. 



, production by heat. Draper, J. W. Ph. 



Mg. 30 (1847) 345-. 

 , in theory and practice. Brande, W. T. 



(vi Adds.) Em. Cor. Sc. 2 (1853) 14. 

 , theory. Soldner, J. Gilbert A. 39 (1811) 



at low temperatures. Pictet, R. Arch. Sc. 

 Ps. Nt. 32 (1894) 233-, 465-, 561-. 



Sources of Radiation 4202 



prismatic, heat and light actions. Melloni, M. 



C. E. 31 (1850) 470-. 

 not a property of electricity. Roberts, M. J. 



L. Electr. S. P. (1843) 34-. 

 solar, and geologic climate. Warring, C. B. 



Science 1 (*1883) 395, 602-. 

 . Le Conte, J. Science 1 (*1883) 



543. 

 to one sphere from another. Meisel, F. Z. 



Mth. Ps. 27 (1882) (H.-lt. Ab.) 65-. 

 theory. Prevost, P. A. C. 6 (1817) 412-. 

 . Biot, J. B. C. E. 8 (1839) 259-; 9 (1839) 



719-. 



Scintillation of gas flames. Forel, F. A. C. 



E. 89 (1879) 408-. 

 Spectroscope, use to distinguish feeble light in 



stronger one. Seguin, J. M. C. E. 68 



(1869) 1322-. 

 Spectrum analysis, quantitative. Janssen, J. 



C. E. 71 (1870) 626-. 

 , . Vierordt, K. [von]. D. C. Gs. B. 4 



(1871) 327-, 457, 519; 5 (1872) 34-. 

 , (Janssen). Champion, P., Pellet, H., 



(& Grenier, M. C. E. 76 (1873) 707-. 



, (Champion, Pellet & Grenier). 

 Janssen, J. C. E. 76 (1873) 711-. 



, . Vierordt, K. von. A. Ps. C. 3 

 (1878) 357-. 



, , estimation of indigo by. Vierordt, 



K. von. Fresenius Z. 17 (1878) 310-. 



, , and titration. Vierordt, K. von. 

 Lieb. A. 177 (1875) 31-. 



Temperature of sun, measuring. Gray, P. L. 



Birm. Ph. S. P. 9 (1895) 103-. 

 Thermobar, instrument for testing if radiant 



heat is subject to gravity. Sanctis, B. de. 



Bb. Brit. 46 (1811) 23- 

 Thermomultiplier, heat phenomena observed 



with. Melloni, M., <& Nobili, . A. C. 48 



(1831) 198-. 

 Thermopile, method of using in comparing 



radiations. Branly, i. C. E. 104 (1887) 



1059-. 

 Thermoscopes, colour-. Rebenstorff, H. A. 



Dresden Isis Sb. (1896) 31-. 

 , electric. Holtz, . N.-Vorp. Mt. 23 



(1892) xi-. 

 Vibratory energy. Guillaume, C. E. [1893] 



Arch. Sc. Ps. Nt. 31 (1894) 121-. 



4202 Sources: Lamps, Arcs, 

 Vacuum Tubes. 



(See also 3010, 6080.) 



Reitlinger, E. [1861] (vra) Wien Schr. 2 



(1863) 45-. 

 Arc, electric, for study of radiation of vapours. 



Deivar, J., & Liveing, G. D. [1882] E. S. 



P. 34 (1883) 119-. 

 Artificial production. Lummer, 0. Smiths. 



Ep. (1897) 273-. 



428 



