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).
The only phenomena of the sort available are eclipses of Jupiter's satellites, especially of the first.
It is remarkable that no records of eclipses are known from Egyptian documents.
It is remarkable that the discussion of ancient eclipses of the moon, and their comparison with modern observations, show only a small and rather doubtful change, amounting perhaps to less than one-hundredth of a second per century.
The notions of the penumbra and umbra are important in considering eclipses (q.v.).