When I penned this conjectural etymology, I was not aware that any speculation had been made upon this word: I find, however, the late M. Langlés suggested the derivation of _oasis_ (variously written by the Greeks αὔασις, ἴασις and υἅσις, ὄασις, [αὔασις is the only other recognized form]) from the Arabic واح: and Dr. Wait, in a series of interesting etymologies (see _Asiatic Journal_, May 1830), suggests वसि, _vasi_ from वस, _vas_, ‘to inhabit.’ _Vasi_ and ὕασις quasi _vasis_ are almost identical. My friend, Sir W. Ouseley, gave me nearly the same signification of وادي, _Wadi_, as appears in Johnson’s edition of Richardson, namely, a valley, a desert, a channel of a river—a river; وادي, _wadi-al-kabir_, ‘the great river,’ corrupted into Guadalquiver, which example is also given in d’Herbelot (see _Vadi Gehennem_), and by Thompson, who traces the word _water_ through all the languages of Europe—the Saxon _waeter_, the Greek ὔδωρ, the Islandic _udr_, the Slavonic _wod_ (whence _woder_ and _oder_, ‘a river’): all appear derivable from the Arabic _wad_, ‘a river’—or the Sanskrit _wah_; and if Dr. W. will refer to p. 1322 of the Itinerary, he will find a singular confirmation of his etymology in the word _bas_ (classically _vas_) applied to one of these _habitable_ spots. The word _basti_, also of frequent occurrence therein, is from _basna_, to inhabit; _vasi_, an inhabitant; or _vas_, a habitation, perhaps derivable from _wah_, indispensable to an oasis! [The _New English Dict._ gives Lat. oasis, Greek ὄασις, apparently of Egyptian origin; cf. Coptic _ouahe_ (whence Egyptian Arabic _wāh_), ‘dwelling-place, oasis,’ from _ouih_, ‘to dwell.’] Footnote 8.1.11: [See _IGI_, xii. 212 f.; E. H. Aitken, _Gazetteer of Sind_, 4; _Calcutta Review_, 1874; _JRAS_, xxv. 49 ff.] Footnote 8.1.12: [The derivation of Pārkar is unknown; that suggested in the text is impossible.] Footnote 8.1.13: [Nārāyansar, an important place of pilgrimage, with interesting temples, is situated at the Kori entrance of the W. Rann (_BG_, v. 245 ff.).] Footnote 8.1.14: [Or _irina_, Yule, _Hobson-Jobson_, 2nd ed. 774.] Footnote 8.1.15: [_Equus hemionus_ (Blanford, _Mammalia of India_, 470 f.; Job xxxix. 5 ff.).] Footnote 8.1.16: