_Hornstone_, next to quartz, is the most abundant of the silicious minerals associated with limestone. It is very often seen imbedded in rounded masses, both in the inclined and horizontal strata. _Flint_ is more rare. Several fine specimens were observed on the western declivity of the Look-Out Mountain, but in no instances in large masses or quantities. _Semi-Opal_ was found in one instance on the dividing ridge, which constitutes the southwestern boundary of the limestone strata. Of the non-descripts you have several specimens. One variety strikes fire with steel, is a milk-white colour, adheres slightly to the tongue, and has no degree of translucency on its edges. As Mr. Kain has furnished you with an interesting detail of particular minerals found in East Tennessee and Western Virginia, I need not recapitulate what he has so well said. (_To be continued._) ART. III. _Notice of the Scenery, Geology, Mineralogy, Botany, &c. of Belmont County, Ohio, by_ CALEB ATWATER, _Esq. of Circleville_. Belmont county is bounded on the north by Jefferson and Harrison, on the west by Guernsey, and south by Monroe county, and on the east by the Ohio river. It is 27 miles in length, and 21 in breadth, containing 535 square miles. Its name, _Belmont_, or beautiful mountain, indicates its situation, for it contains within its boundaries a fine body of land, rising gradually as you are travelling from the Ohio to the west, until you arrive at about the middle of it, where, from the elevation on which you stand, the eye in an eastern direction, beholds one of the most charming prospects in the state. Looking towards the east, in a pleasant morning, you behold a beautiful country of hill and dale spread out before you, divided into convenient and well-cultivated farms, intersected by glittering streams, meandering through them towards the Ohio. You hear the lowing of numerous herds around you, the shrill matin of the songsters of the forest, and the busy hum of the industrious husbandman; you see here and there a clump of trees interspersed among the cultivated parts of the country; you see the comfortable dwelling-house, the substantial barn, and hear the rumbling noise of the mill; and when you reflect that those who dwell here are industrious and enterprising, virtuous, free, and happy, you behold with pleasure, and listen with delight, while reflecting on the objects around you. _Geology and Mineralogy._