This fourth and last division of the work contains a large mass of very valuable and interesting miscellaneous matter--everything, indeed, valuable and interesting written by Mr. Jefferson, and not embraced in the previous divisions of the work. To the general reader, it will be found much the most instructive and entertaining portion of the publication, ranging, as it does, over a vast field of discussion--unless, perhaps, the latter portion of Mr. Jefferson's Correspondence be excepted, say, from 1812 to the end of his life. Among the interesting papers contained in this division of the work, may be enumerated the "Notes on Virginia," biographical sketches of distinguished Revolutionary characters, Mr. Jefferson's argument in vindication of his official action while President of the United States in connection with the Batture at New Orleans--the celebrated Anas, Resolutions defining the relations between the State and Federal Governments, and believed to be the originals of the Kentucky Resolutions of 1799, &c. These are but a few of the interesting papers comprised in Book IV. There are many others possessing great intrinsic interest and a very considerable historical value, as throwing much light upon the early history of our country. And nowhere does the genius of the distinguished Author, and the richness and diversity of his resources, more impress the reader than in the mass of miscellaneous matter collected in this last division of the work. CONTENTS TO NOTES ON VIRGINIA. PAGE I.--An exact description of the limits and boundaries of the State of Virginia, 249 II.--A notice of the rivers, rivulets, and how far they are navigable, 250 III.--A notice of the best seaports of the State, and how big are the vessels they can receive, 263 IV.--A notice of its mountains, 263 V.--Its cascades and caverns, 266 VI.--A notice of the mines and other subterraneous riches; its trees, plants, fruits, &c., 270 VII.--A notice of all that can increase the progress of human knowledge, 320 VIII.--The number of its inhabitants, 328 IX.--The number and condition of the militia and regular troops, and their pay, 334 X.--The marine, 334 XI.--A description of the Indians established in that State, 336 XII.--A notice of the counties, cities, townships and villages, 350 XIII.--The constitution of the State, and its several charters, 352