ingeminate

To say (a statement, word etc.) two or more times; to reiterate, to emphasize through repetition.

we found a black pavillion; in it three old Arabians; who, out of their Alcoran ingeminated a dolefull requiem to their Brothers carcasse, over which they sat […]

redoubled

It is an ingeminate expression of our labours . And that supposes us to have faculties capable of improvement

reiterated