Herschel, Sir John, astronomer, only son of Sir William; prosecuted with great diligence and success the same researches as his father; spent four years at the Cape, and added much to our knowledge of the stars and meteorology; contributed a “Preliminary Discourse on the Study of Natural Philosophy” to Lardner's “Cyclopædia,” and an excellent “Treatise on Astronomy,” afterwards extended (1790‒1871).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Herrnhut * Herschel, Lucretia