（Θαλλώ). one of the Attic Horae, who was believed to grant prosperity to the young shoots of plants, and was also invoked in the political oath which the citizens of Athens had to take. (Paus. 9.35.1; Pollux, Onom. 8.106.) [L.S]
William Smith. A Dictionary of Greek and Roman biography and mythology. London. John Murray: printed by Spottiswoode and Co., New-Street Square and Parliament Street. In the article on Soranus, we find: "at this present time (1848)" and this date seems to reflect the dates of works cited. 1873 - probably the printing date.