the position of these lines, and he first explained the delicacy of the Sodium reaction, and first described the use of a collimator for spectroscopic research, rendering the rays thus parallel as if the slit were placed at an infinite distance (1856). TALBOT, H. Fox: Some Experiments on Coloured Flames. Science, v. 1826. Brewster's Journal of On a Method of obtaining Homogeneous Light of Great Intensity. On the Flame of Lithia. Phil. Mag. Third Series, 1834, iv. 11. THALÉN, R.: On the Determination of the Wave-lengths of the Lines of the Taking as his starting-point the determination of wave-lengths of the principal Fraunhofer's Lines by Angström (Recherches sur le Spectre Solaire, par A. J. Ångström. I.-Spectre Normal du Soleil. Upsal, 1868), the author, by graphical interpolation, obtains, from Kirchhoff's and Ångström's Tables, the wave-lengths of the bright metallic lines. A large Plate accompanies the Memoir, giving the lines and their wave-lengths of forty-five metals. The following twenty-three were examined in the metallic state :-K, Na, Mg, Al, Fe, Co, Ni, Zn, Cd, Pb, Tl, Bi, Cu, Hg, Ag, Au, Sn, Pt, Pd, Os, Sb, Te, In. The remaining twenty-two were examined as chlorides : Li, Cs, Rb, Ba, Sr, Ca, Gl, Zr, Er, Y, Th, Mn, Cr, Ce, D, L, U, Ti, Wo, Mo, V, As. TYNDALL & FRANKLAND: On the Blue Band of the Lithium Spectrum. Phil. Mag. Fourth VAN DER WILLIGEN: On the Spark of the Induction Coil. Pogg. Ann. evi. 615. VIERORDT, K. : Die Anwendung des Spectral Apparates zur Vergleichung und WALTENHOFEN, A. VON: Spectra of Electric Spark in rarefied Gases. Dingl. Pol. J. clxxvii. 38. WATTS, W. M.: On the Spectrum of the Bessemer Flame. Phil. Mag. Fourth On the Spectra of Carbon. Phil. Mag. Fourth Series, xxxviii. 249. On the Spectrum of the Bessemer-flame. Phil. Mag. vol. 45, P. 81. WHEATSTONE, C.: On the Prismatic Decomposition of the Electric, Voltaic, and Electromagnetic Sparks. Read August 12, 1835. British Assoc. Dublin. Chemical News, iii, 198. WÜLLNER : On the Spectra of the Gases under different Pressures. Phil. Mag. YOUNG, C. A.: Spectroscopic Notes. Journ. Franklin Institute. III. MEMOIRS RELATING TO THE APPLICATION OF SPECTRUM ANALYSIS TO CELESTIAL CHEMISTRY. AIRY, G. B., Astronomer Royal : Measurements of Stellar Lines. Monthly Notices of the Roy. Astron. Wave-lengths of Lines in Kirchhoff's Maps. Phil. Trans. 1868, ÅNGSTRÖM, A. J.: Wave-length Measurements. Aus Oefversigt af K. Vetensk. Acad. On the Fraunhofer Lines visible in the Solar Spectrum, and on the Optical Researches. Vetensk. Acad. February 1853. Phil. Mag. The nature of the Electric Spectrum pointed out. ÅNGSTRÖM, A. J.: Observations on certain Lines of the Solar Spectrum. Fourth Series, xxiii. 76. Phil. Mag. Ångström believes that the groups A and B, as well as a group lying between в and c, are due to absorption in the earth's atmosphere, caused by the presence of some compound gas -perhaps carbonic acid-but not due to aqueous vapour. Recherches sur le Spectre normal du Soleil, avec Atlas de six planches. Upsal. W. Schultz, 1868. The Solar Lines from A to H mapped according to their wave-lengths. A most valuable and interesting memoir. See Lecture V. Appendix A. AGNELLO ANGELO: Ecclisse Totale del 22 Dec. 1870. Palermo, 1870. BLASERNA, P.: Sulla Polarizzazione della Corona Solare. Palermo, 1871. BREWSTER, SIR D.: Observations of the Lines of the Solar Spectrum, and on those produced by the Earth's Atmosphere, and by the Action of Nitrous Acid Gas. Phil. Mag. Third Series, viii. 384. BREWSTER & GLADSTONE : On the Lines of the Solar Spectrum. Map of the Solar Spectrum, giving the Absorption Lines of the Earth's Atmosphere. Phil. Trans. 1860, p. 149. BROWNING, J.: On the Spectra of the Meteors of November 13-14, 1866. Phil. CHACORNAC: Physical Constitution of the Sun. Compt. Rend. Ix. 170. COOKE, J. P.: On the Aqueous Lines of the Solar Spectrum. Phil. Mag. Fourth When the air was damp Cooke saw seven lines and a nebulous band, besides the Nickel line, between the D lines. These seven lines disappeared when the air was dry. Wave-length of Fraunhofer's Lines measured. Wien. Acad. Ber. 2 Abthl. 1. 296. DONATI : Intorno alle Strie degli Stellari. Il Nuovo Cimento, xv. 292. On the Variation in Intensity of the Fixed Lines of the Solar FAYE : On the Physical Constitution of the Sun. Compt. Rend. Ix. 89, 138, 468. FRANKLAND & LOCKYER: Preliminary Note of Researches on Gaseous Spectra in relation to the Physical Constitution of the Sun. Proc. Roy. Soc. xvii. 288. Researches on Gaseous Spectra in relation to the Physical Constitution of the Sun, Stars, and Nebula. Proc. Roy. Soc. xvii. 453; xviii. 79. FRAUNHOFER : Denkschriften der Münchener Academie. 1814 and 1815. Giving exact measurement of the dark Solar Lines. For fac-simile of Fraunhofer's map see p. 27. GIBBS, WOLCOTT : On the Normal Solar Spectrum. Silliman's Journal, Jan. 1867. On Wave-lengths. Silliman's Journal, March 1869. GLADSTONE, J. H.: Notes on the Atmospheric Lines of the Solar Spectrum, and on certain GRANDEAU, L.: On the Spectrum of Lightning. Chemical News, ix. 66. HERSCHEL, ALex. : On the Spectra of Meteors. Intellectual Observer, Oct. 1866. On the Total Eclipse of the Sun of 18th August, 1868. Proc. Roy. HERSCHEL, LIEUT. JOHN: On Spectra of Southern Nebula, and Spectrum of Lightning. Proe. Additional Observations of Southern Nebulæ. Proc. Roy. Soc. xvii. 303. On the Solar Eclipse of 1868 seen at Jamkandi. Spectroscopic Observations of the Solar Prominences. Proc. Roy. HUGGINS, WILLIAM: ε On the Disappearance of the Spectrum of & Piscium at its Occulta- On the Spectra of the Nebula. Phil. Trans. 1864, p. 437. Phil. On the Nebula in the Sword-handle of Orion. Proc. Roy. Soc. Further Observations on the Spectra of some of the Nebula, with a On the Spectrum of Comet I. 1866. On the Spectrum of Comet II. 1867. Soc. xvii. 288. Proc. Roy. Soc. xv. 5. Monthly Notices, Roy. Astron. On the Spectrum of Brorsen's Comet, 1868. Proc. Roy. Soc. xvi. 386. Further Observations on the Spectra of some of the Stars and Nebula, with an Attempt to determine therefrom whether these bodies are moving towards or from the Earth; also Observations of the Spectra of the Sun and of Comet II. 1868. Phil. Trans. 1868, p. 529. On the Spectrum of Mars. Monthly Notices, Royal Astron. Soc. xxvii. 178. Description of a Hand Spectrum-Telescope. Proc. Roy. Soc. xvi. 241. This instrument is suitable for an observation of Meteors, and was successfully used at the Solar Eclipse of 1868. Note on a Method of viewing the Solar Prominences without an Note on the Heat of the Stars. Proc. Roy. Soc. xvii. 309. On the Spectrum of the Great Nebula in Orion and on the Motions vol. xx. 379. HUGGINS, WILLIAM, & MILLER, W. A. : On the Lines of the Spectra of some of the Fixed Stars. Proc. Roy. Soc. xii. 444. |