Such as is sufficient to establish the proposition in question, beyond hesitation, ambiguity, or reasonable doubt In an unprejudiced mind. Evans v. Rugee, 57 Wis. 623, 16 N. W. 49; French v. Day, 89 Me. 441, 36 Atl. 909 ; Ward v. Waterman, 85 Cal. 488, 24 Pac. 930 ; Winston v. Burnell, 44 Kan. 367, 24 Pac. 477, 21 Am. St Rep. 289.