"No ore except iron occurs in sufficient quantity in the state, to deserve notice in an agricultural point of view. In the west part of Worcester county, the soil, for a width of several miles across the whole state, is so highly impregnated with the _oxide of iron_, as to receive from it a very deep tinge of what is called iron rust. This is particularly the case in the low grounds; where are frequently found beds of bog ore. I do not know very definitely the effect of this iron upon vegetation; but, judging from the general excellence of the farms in the Brookfields, Sturbridge, Hardwicke, New Braintree, Barae, Hubbardston, &c., I should presume it to be good. Certainly, it cannot be injurious; for no part of the county exceeds the towns just named, in the appearance of its farming interest--and nearly all the county, as may be seen by the map, is of one formation. It would be an interesting problem, which in that county can be solved, to determine the precise influence of a soil highly ferruginous upon vegetation." Next in geological and statistical importance, I would place the mineral springs of Virginia; and these would form a legitimate subject of investigation to those who should be appointed to conduct a geological survey. I am not aware of any portion of country of the same extent, possessing an equal number and variety of mineral springs, as the counties of Bath, Greenbrier and Monroe. This is a subject upon which one might easily compose a book, but I must confine myself to a few lines. The waters are thermal and cold; the former of various degrees of intensity. They hold in solution a variety of metals, earths, acids, and alkalies, combined in various proportions, and suited to relieve the sufferings of invalids from a number of diseases. Mineral springs of less interest than these, have excited the attention of the learned in almost every age and country; and Virginia owes it to her high mental standing, independently of every other consideration, to assist the cause of science, by investigating the causes of the high temperature, and making accurate analyses of these waters. It is the duty of states, as it is of individuals, to furnish their quota to the general stock of information; and this is peculiarly the duty of a republican state, whose happiness, nay, whose very political existence, depends upon an improved state of the minds of its citizens. Mr. John Mason Good, in his "Book of Nature," after describing the barren state of society in the middle ages, says, "we have thus rapidly travelled over a wide and dreary desert, that, like the sandy wastes of Africa, has seldom been found refreshed by spots of verdure, and what is the moral? That ignorance is ever associated with wretchedness and vice, and knowledge with happiness and virtue. Their connections are indissoluble; they are woven in the very texture of things, and constitute the only substantial difference between man and man," and I