Herschel Family.

Notable Herschel family members include: Sir John F.W. Herschel, an English astronomer, physicist, and chemist best known for discovering the use of thiosulphate, or hypo, as a fixing agent in photography and for coining the photographic terms "negative" and "positive;" his father, Sir William Herschel, an English astronomer and musician (of German birth) who discovered the planet Uranus and pioneered the field of stellar astronomy; his aunt, astronomer Caroline Lucretia Herschel; and his son Sir William James Herschel, who first introduced the use of fingerprints as a means of official identification.

From the description of Papers, 1721-1951, (bulk 1810-1871). (Harry Ransom Humanities Research Center (HRC); University of Texas at Austin). WorldCat record id: 122472759