Let the reader, then, as he pursues the history of this conflict between the opposing interests of the two classes of States, and observes how strenuously the different theories were maintained, until victory became impossible on either side, note the danger of adhering too firmly to mere theoretical principles, in matters of government. He will see the impressive spectacle of States assembled for the formation of some system capable of answering the exigencies of their situation; he will see how rapidly a difference of local interests developed the most opposite theories, and how profoundly those theories were discussed; and he will see this conflict carried on for days, and even for weeks, with all the sincerity that interest lends to conviction, and all the tenacity that conviction can produce, until at last the whole discussion leads to the probable failure of the purpose for which the assembly had been instituted. He will then see an amalgamation of the two systems, which in their integrity were irreconcilable, and will witness the first introduction of that mode of adjusting opposite interests and conflicting theories of government which lies at the basis of the Constitution of the United States, and which alone can furnish a safe foundation on which to unite the destinies and wants of separate communities possessed of distinct political organizations and rights. The Convention had received the report of the committee of the whole on the 19th of June. From that day until the 5th of July the struggle was continued, commencing with the proposition which affirmed the division of the legislative department of the government into two branches. Although such an arrangement did not necessarily involve the principle of national and popular representation, it was opposed as unnecessary by those who desired to retain the system of representation by States, and who therefore intended to preserve the existing organization of the Congress. Still, the needful harmony and completeness of the scheme, according to the genius of the Anglo-American liberty, required this division of the legislature.