J. Madison with his respects to Mr. Robbins, returns his thanks for the speech of M. R. in the Senate of the U. S. on the 20th. of May.

The Constitutional system of the U. S. being truly a Non-descript, can not be explained by the classifying & technical terms applied to other Governments; and the speech has judiciously adopted the mode of precise delineation of its features, according to the fact.