Mr. DAYTON said, he had been instructed by the Legislature of New Jersey, in case any prospect presented itself of a removal of the seat of Government, to offer, in their name, the public buildings in Trenton for their accommodation. He, therefore, gave notice that, in case the bill went to a third reading, he should produce his instructions, and move the substitution of Trenton in the room of Baltimore. At the same time, he was free to declare his opinion of the impolicy of the proposed measure. The provision of the constitution had arisen from an experience of the necessity of establishing a permanent seat for the Government. To avert the evils arising from a perpetual state of mutation, and from the agitation of the public mind whenever it is discussed, the constitution had wisely provided for the establishment of a permanent seat, vesting in Congress exclusive legislation over it. While he declared this as his creed, he begged it to be understood that there were, in his opinion, some rightful grounds of removal. There were four such, two of which were the following: if the place should be found a grave-yard for those who resided in it, or if the inconveniences of conducting the machine of government should be so great as to prevent the due transaction of the public business. For the existence of these, no fault could be attached to the District. If, therefore, a removal took place on their account, Congress were bound to indemnify the proprietors. There were two other grounds of removal, which would justify a removal without indemnity, as they would be the effect of the misconduct of the inhabitants of the District. These were, the evidence of a turbulent spirit, endangering the safety of Congress, and of a determined resolution, arising from a dissatisfaction which the Government or Congress expressed in favor of a recession. When he stated these grounds for removal, Mr. D. said, it was not from any apprehension of their occurrence. On the contrary, he believed the Government in perfect safety, and he was convinced, if any hostile arm should be raised against it, the inhabitants of Columbia would be ready to shed their blood in its defence. Nothing could exceed his surprise at the motives expressed by the gentleman from Maryland for bringing forward this measure. He should have expected, if the gentleman wished to promote the interests of the city, he would have imitated the example of the Athenians, who, in order to make a particular fund devoted to theatrical exhibitions sacred, had passed a law punishing with death any man who should move to divert it from its allotted purpose; and that the honorable gentleman, instead of bringing forward this bill, would have introduced one punishing with death the man who should move a change of the seat of Government; so that he who made the attempt might know that he did it with a halter around his neck. Mr. MACLAY moved to strike out the words “Baltimore,” and “Maryland,” in the first section.