The county surveyors of the several counties are empowered to administer oaths to all such persons as are required by law to be sworn in making partition of real estate, in establishing boundaries and in surveying vacant lands under warrants. (1881, c. 144; Code, s. 3314; Rev., s. 2361; C.S., s. 3197; 1959, c. 879, s. 4.)