The jurors for the trial of any case shall be chosen in open court by ballot from the list of persons summoned which has been served upon the accused; and for that purpose the clerk of the court shall cause the name and designation of each juror to be written on a separate piece of paper or parchment, all the pieces being of the same size, and shall cause the pieces to be rolled up, as nearly as may be, in the same shape, and to be put into a box or glass and mixed, and the clerk shall draw out the said pieces of paper or parchment one by one from the box or glass; and if any of the persons whose names shall be so drawn shall not appear, or shall be challenged, with or without cause assigned, and set aside, then such further number shall be drawn until the number required for the trial shall be made out; and the persons so drawn and appearing, and being sworn, shall be the jury to try the accused, and their names shall be recorded in the minute book kept by the clerk.