Eight British government expeditions for observing total solar eclipses were conducted by him between 1870 and 1905.
Among Lockyer's other works are - The Dawn of Astronomy (1894), to which Stonehenge and other British Stone Monuments astronomically considered (1906) may be considered a sequel; Recent and coming Eclipses (1897); and Inorganic Evolution (1900).
Firdousi accepted the challenge, and the three poets having previously agreed upon three rhyming words to which a fourth could not be found in the Persian language, 'Ansari began "Thy beauty eclipses the light of the sun"; Farrakhi added "The rose with thy cheek would comparison shun"; 'Asjadi continued "Thy glances pierce through the mailed warrior's johsun"; 1 and Firdousi, without a moment's hesitation, completed the quatrain "Like the lance of fierce Giv in his fight with Poshun."
A few latitudes had indeed been observed, but although Hipparchus had shown how longitudes could be determined by the observation of eclipses, this method was in reality not available for want of trustworthy time-keepers.
Ptolemy knew but of a few latitudes which had been determined by actual observation, while of three longitudes resulting from simultaneous observation of eclipses he unfortunately accepted the least satisfactory, namely, that which placed Arbela 45° to the east of Carthage, while the actual meridian distance only amounts to 34°.
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