298 IRON. little consistence, and this is Morass-ore; but in course of tune they become harder, their colour passes to brown, and thus Swamp-ore is formed. After,the water lias com pletely evaporated, and the swamp is dried up, the swamp- ore becomes much harder,.and at length passes into Meadow-ore, which is already covered with soil and grass *. From the preceding observations, it is evident that there is a complete transition of the different subspecies of bog iron-ore into each other, and that masses may be found m which we can observe the different degrees of in duration. Geographic Situation, fc- It is found in various places in the Highlands of Scot land, in the Hebrides, and Orkney and Zetland Islands. In Saxony it occurs at Torgau; in Upper and Lower Lusatia ; in a part of the Mark Brandenburg; in Meck lenburg ; Pomerania ; and in the kingdom of Hanover. It also extends through Prussia, Poland, Courland, Liefland, into Itussia, and the southern parts of Swe den, particularly in Smoland, where it is found in very considerable quantity. It is also found in small quan tity in the northern parts of Westphalia ; in Silesia ; in the island of Seeland in the Baltic ; in the Upper Pala tinate ; and Hungary. It occurs in general more abundantly in the northern than in the western and southern European countries. * In some of the Swedish lakes, this ore is dopoeitcd so abundantly, that it is dredged up every twenty or thirty years._Vid. Swedenborg's RegnuW Subterrancum.