A fair, proper, and due degree of care and activity, measured with reference to the particular circumstances; such diligence, care, or attention as might be expected from a man of ordinary prudence and activity. Railroad Co. v. Gist, 31 Tex. Civ. App. 002. 73 S. W. 857; Racon v. Steamboat Co., 90 Me. 40.37 Atl. 32S; Latta v. Clifford (C. C.) 47 Fed. 020: Rice v. Brook (C. C.) 20 Fed. 014