Letter from the assistant post-master-general : accompanying a specification of the various post offices, and of the compensations which have been allowed to the deputy post-masters, from the first of April, to the thirtieth of September, 1797, inclusive, in pursuance of the 5th section of an act, entitled, "An act in addition to the act, entitled, 'An act to establish the post office and post roads within the United States." : 26th March, 1798. Referred to the committee appointed, on the 6th December last, to inquire whether any, and if any, what alterations are necessary in the law establishing the post office and post roads within the United States.