In the spring of 1860, having paid a somewhat hasty visit to the Iron Ore deposits near Kirton-in-Lindsey, and examined the country at various points between that town and the village of Scunthorpe, I was induced to give a brief description of those ferruginous beds to the meeting of the Society, held at Wakefield. The following notes record my views on this Lincolnshire deposit, its relations to the iron-ore formations of the Cleveland and Whitby district, and to those discovered in Northamptonshire and the adjoining counties. The first deposit which I examined was about, half a mile from the Railway station at Kirton-in-Lindsey. The portion exposed was situated on one side of a hollow, on each side of which the ground rose slightly. The iron ore was found about a foot below the cultivated surface: in some places, a few inches only of soil being removed, the iron-ore deposit was exposed. This was in a loose state of aggregation, the hardest masses being easily crushed, and by far the largest portion having the appearance of a very ferruginous earth. This deposit varied in depth, where I saw it, from two to four or five feet. I was, however, informed that in some places it acquired a somewhat greater thickness. I have frequently seen the ordinary soil of ploughed fields looking more ferruginous than this iron ore. Indeed, it was so unusual a thing to see men digging iron ore from the ground and shovelling it into carts, like so much ...