for any of the purposes aforesaid or for the purpose of raising any moneys for the payment of legacies debts duties or testamentary
expenses or for the purpose of advancement or for the purpose of
raising moneys for the payment of any annuity my trustee may
employ and expend any moneys in hand or forming part of m estate and may borrow any moneys which may be required and
secure repayment of such moneys with interest thereon at such
time as my trustee may think fit by mortgage of the whole or part
of my estate and any such mortgage shall contain all powers and
provisions and shall be upon such terms and conditions in all respects as my trustee shall think proper;