The said Sheriff shall be allowed for the service of one subpoena only, against any witness that may be returned non est, and for whom the said subpoena may be renewed, whether once or oftener in one term. P.L.L., 1860, §187 1888, §192 1915, §336 1927, §336 1930, §336 1938, §434 1949, §267 1969, §22-46 1898, ch. 123, §336