Bank shall be equal to 50 per centum of the capital money so paid over
to it by the several associations, the board of directors may declare
such additional dividend as in their judgment may seem wise: _Provided,
however_, That no such increase, or extra dividend, shall ever reduce
the surplus below said 50 per centum of the capital so held by it. The
same rule herein laid down for the payment of dividends by the National
Land Credit Bank shall apply to the several State associations and
each and all of the local associations.