The law is very strict as to banks holding real estate other than that required for their own premises, nor can they lend on mortgages. They may, however, take a mortgage as additional security for a debt already incurred, and in case of foreclosure they are allowed to bid in the property, but cannot hold it over a certain length of time. Real estate other than bank premises, in the statement, represents lands which have been acquired in this manner and bought in by the bank in its effort to improve the position of a doubtful or a bad debt. Banks naturally try to get rid of property thus acquired as quickly as possible and, in making sales, frequently sell for part cash and accept security for the balance in the shape of a mortgage. These are shown in the statement as "mortgages on real estate sold."