so as to bind the county, without statute, the authorities are quite clear. People v. Stout (NY, 1856), 23 Barb 349; McCalmont v. The County of Allegheny (1857), 29 Penn St 417; Supervisors of Crawford County v. Le Clerc (Wis, 1851), 4 Chand 56; White v. Polk County (1864)...