465. Express covenant of indemnity.

It was usual for the tenant, on assigning the term, to take from the assignee an express covenant for payment of rent and performance of the covenants of the lease, and for indemnity, the assignee taking a similar covenant on further assignment; and the tenant and an assignee who, by reason of his having entered into such a covenant, remained under a continuing liability were entitled to have this covenant inserted in the assignment