eric term, applicable to the transfer of all classes of real property. 3 Washb. Real Prop- 181. As distinguished from a mere license, a grant passes some estate or interest, corporeal or incor- poreal, in the lands which it embraces; can only be made by an instrument in writing, under seal; and is irrevocable, when made, unless an express power of revocation is reserved. A license is a mere authority; passes no estate or interest what- ever; may be made by parol; is revocable at will; and, when revoked, the protection which it gave ceases to exist. 3 Duer, 255, 258. The term "grant," in Scotland, is used in reference (1) to original dispositions of land, as when a lord makes grants of land among tenants; (2) to gratuitous deeds. Paterson. In such case, the superior or donor is said to to grant the deed; an expression totally un- known in English law. Mozley & Whitley. By the word "grant,” in a treaty, is meant not only a formal grant, but any concession, warrant, order, or permission to survey, pos- sess, or settle, whether written or parol, ex- press, or presumed from possession. Such a grant may be made by law, as well as by a patent pursuant to a law. 12 Pet. 410. See 9 Adol. & E. 532; 5 Mass. 472; 9 Pick. 80. "GRANT, BARGAIN, AND SELL." Operative words in conveyances of real es- tate.