The “Mortgagor covenants with the Mortgagee that the Mortgagor will comply with “the provisions: of the Lease with respect of the plight, condition and state of repair of the said lands and that in case of neglect to do so, or if the Mortgagor or those claiming under it make default as to any of the covenants or provisos herein, the principal hereby secured shall, at the option of the Mortgagee, forthwith become due and payable, and in default of payment the powers of entering upon, and leasing and selling hereby given may be exercised, AND the Mortgagor covenants. with the Mortgagee’ that Mortgagor has done no act to encumber the said lands, save aforesaid. AND the Mortgagor doth release to the Mortgagee all claims upan the said lands, subject to the said provisos. ANDO the Mortgagor covenants and agrees with the Mortgagee: (a) To observe and perform all the terms, covenants and conditions contained in the Lease, and IT JIS HEREBY DECLARED AND AGREED that any default by the Mortgagor in its capacity as the Lessee under the Lease, shall consitute.a default hereunder; To deliver to the Mortgagee, if so requested at any time by the Mortgagee, recefpts or other evidence of payment satisfactory to the Mortgagee of payment by the Mortgagor of the rent reserved by the Lease; That it will not surrender or terminate its leasehold estate and interest above-described nor surrender or terminate the Lease, and that it will not, without the written consent of the Mortgagee, modify, change, supplement, alter or amend the Lease either orally ‘or