lar constitution.
1865 Kew results published.
1865 Zoellner argues for a high temperature in the great
planets.
1866 Identity of the orbits of the August meteors and
of comet 1862 iii. demonstrated by Schiaparelli.
1866 Delaunay explains lunar acceleration by a lengthening
of the day through tidal friction.
1866, March 4 Spectroscopic study of the sun's surface by Lockyer.
1866, March 12 New star in Corona Borealis detected by Birmingham.
1866, October Schmidt announces the disappearance of the lunar crater
Linne.
1866, Nov. 13 Meteoric shower visible in Europe.
1867 Period of November meteors determined by Adams.
1867, Aug. 29 Total solar eclipse. Minimum sun-spot type of corona
observed by Grosch at Santiago.
1867 Discovery of gaseous stars in Cygnus by Wolf and Rayet.
1868, February Principle of daylight spectroscopic visibility of
prominences started by Huggins.
1868, Aug. 18 Great Indian eclipse. Spectrum of prominences observed.
1868, Aug. 19 Janssen's first daylight view of a prominence.
1868, Oct. 26 Lockyer and Janssen independently announce their
discovery of the spectroscopic method.
1868 Doppler's principle applied by Huggins to measure
stellar radial movements.
1868 Publication of Angstrom's map of the normal solar
spectrum.
1868 Spectrum of Winnecke's comet found by Huggins to agree
with that of olefiant gas.
1869, Feb. 11 Tenuity of chromospheric gases inferred by Lockyer and
Frankland.
1869, Feb. 13 Huggins observes a prominence with an "open slit."
1869, Aug. 7 American eclipse. Detection of bright-line coronal
spectrum.
1870 Mounting of Newall's 25-inch achromatic at Gateshead.
1870 Proctor indicates the prevalence of drifting movements
among the stars.
1870 A solar prominence photographed by Young.
1870, Dec. 22 Sicilian eclipse. Young discovers reversing layer.
1871, May 11 Death of Sir J. Herschel.
1871, June 9 Line-displacements due to solar rotation detected by
Vog