An agent who makes a contract either without authority or or in excess of authority, binds himself. Moore v. Wilson, 26 Foster (N. H.) 332; Meech v. Smith, 7 Wend. (N. Y.) 315; Roberts v. Button, 14 Ver. 195; Royce v. Allen, 28 Ver. 234; Bank of Hamburg v. Way, 4 Strobh. (S. C.) 87; Layny v. Stewart, 1 W. & S. (Pa.) 222; Feeter v. Heath, 11 Wend. (N. Y.) 478; Heath v. Hoffhines, 152 S. W. 176, - Tex. Civ. App. - .