The act of ascertaining the worth of a thing. Tbe estimated worth of a thing. See Lowenstein v. Schiffer, 38 App. Dlv. 178, 56 N. Y. Supp. 674; State v. Central Pac. R. Co., 7 Nev. 104; Sergeant v. Dwyer, 44 Mlnn. 309, 46 N. W. 444