Section 923. Security for credit on sale

The portion of the purchase-money
  for which credit is allowed  in  the  interlocutory  judgment  shall  be
  secured at interest by a mortgage upon the property sold, with a bond of
  the  purchaser;  and  by  such additional security, if any, as the court
  prescribes. The officer making the sale may take separate mortgages  and
  other  securities  in  the name of the county treasurer of the county in
  which the property is situated  for  such  convenient  portions  of  the
  purchase-money  as  are directed by the court to be invested; and in the
  name of the owner, for the share of any known  owner  of  full  age  who
  desires to have it invested.