a professor of German at Vassar College and trustee of Connecticut College for Women Roger Sherman Baldwin Whitney was born January 6, 1863, but died January 17, 1874. Emily Henrietta Whitney was born August 29, 1864. Margaret Dwight Whitney was born November 19, 1866. He died at his home, on Whitney Avenue, on June 7, 1894. Career Whitney revised definitions for the 1864 edition of Webster's American Dictionary, and in 1869 became a founder and first president of the American Philological Association. In the same year he also became Yale's professor of comparative philology. Whitney also gave instruction in French and German in the college until 1867, and in the Sheffield scientific school until 1886. He wrote metrical translations of the Vedas, and numerous papers on the Vedas and linguistics, many of which were collected in the Oriental and Linguistic Studies series (1872–74). He wrote several books on language, and grammar textbooks of English, French, German, and Sanskrit. His Sanskrit Grammar (1879) is notable in part for the criticism it contains of the Ashtadhyayi, the Sanskrit grammar attributed to Panini. Whitney describes the Ashtadhyayi as "containing the facts of the language cast into the highly artful and difficult form of about four thousand algebraic-like rules (in the statement and arrangement of which brevity alone is had in view at the cost of distinctness and unambiguousness)." In his Course in General Linguistics in the chapter on the 'Immutability and Mutability of the Sign', Ferdinand de Saussure credits Whitney with insisting on the arbitrary nature of linguistic signs. The linguist Roman Jakobson (Jakobson 1965, 23-4) remarks that Whitney exerted a deep influence on European linguistic thought by promoting the thesis of language as a social institution. In his fundamental books of the 1860s and 1870s, language was defined as a system of arbitrary and conventional signs. This doctrine was borrowed and expanded by Ferdinand de Saussure, and it entered into the posthumous edition of his 'Course', adjusted by his disciples C. Bally and Albert Sechehaye (1916). The teacher declares: "On the essential point it seems to us that the American linguist is right: language is a convention, and the nature of the sign that is agreed upon remains indifferent." Jakobson writes, Arbitrariness is posited as the first of two basic principles for defining the nature of the verbal sign: "The bond uniting the signifier with the signified is arbitrary." The commentary points