Section 839. Deputy comptroller in Oneida county

The county comptroller of
  the county of Oneida may, after entering upon the duties of his  office,
  designate  two  of  the  assistants  or  clerks  in  his  office  deputy
  comptrollers. Such designation shall be in writing and shall  be  signed
  by  the  county comptroller and filed in the office of the county clerk.
  Such county comptroller shall also designate in writing and file in  the
  office of the county clerk and the clerk of the board of supervisors the
  order  in which such deputy comptrollers are to serve during his absence
  or inability to act.  Before any such deputy so designated  pursuant  to
  the  provisions  of  this  section  enters  upon  the performance of his
  duties, he shall take the constitutional oath of office. Either of  such
  deputy  comptrollers  in the county of Oneida may perform such duties of
  the comptroller as may be assigned to him by an order of the comptroller
  to be entered in his office and shall also perform all the duties of the
  comptroller when the comptroller shall be absent  from  his  office,  or
  shall  be incapable of performing the duties thereof, or when the office
  shall become vacant, until it shall be filled.