[Frost and fire : natural engines, tool-marks and chips : with sketches taken at home and abroad by a traveller] . melt and freeze gas, water andslag, lava and metal, and move things moved by them; theyshape clouds in the air, plates of slag, mounds in lava, andgreat mountains on the earth ; they have upheaved and de-pressed Iceland, Norway, and Scotland; they have altered thewhole surface of the globe, and its upper crust, so far as it is CINDER HEAPS. 3 explored; and tliey may have done still greater things, if theywere the servants employed to do the work. So a traveller, surrounded by moun
[Frost and fire : natural engines, tool-marks and chips : with sketches taken at home and abroad by a traveller] . melt and freeze gas, water andslag, lava and metal, and move things moved by them; theyshape clouds in the air, plates of slag, mounds in lava, andgreat mountains on the earth ; they have upheaved and de-pressed Iceland, Norway, and Scotland; they have altered thewhole surface of the globe, and its upper crust, so far as it is CINDER HEAPS. 3 explored; and tliey may have done still greater things, if theywere the servants employed to do the work. So a traveller, surrounded by mountains of ice and cinders,may be driven by the work before him to think of the agentsemployed to do it, and of him who set them their tasks, whosaid Let there be light, and there was light, in the dawm oftime. In furnaces and volcanoes, in models and steam engines,in cinder heaps and in Iceland, in art and nature, certainmechanical forces work, and movements and forms producedby them are alike on all scales. The tool marks of fire and frost may be learned in theirworkshop, and they may be set to work at Fio. 1. Portrait of an old Friend and Preceptor. ,( vA^ CHAPTEK TI. HOME GEOLOGY. A HOME student of geology is forced to take a great deal upontrust, and has often to work sorely against the grain. Hemay understand the teaching of practised men, and believewhat he is told ; but he cannot be familiar with the irresist-ible power of natural forces, whose power he has only seendisplayed upon some pigmy scale. A landsman who has only seen a puddle in a storm, hasno clear notion of the Atlantic in a gale ; and so it is with aman who has never been far from home. He may have been familiar all his life with the form ofsome great mountain covered with rich soil, grass, heather,trees, and yellow corn in summer; sprinkled with snow, andglittering with icicles in winter. He is taught that therounded form which he has known from his childhood, andwhich has never changed within the mem
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Keywords: ., bookpublisheredinburghsn, booksubjectgeo, booksubjectmeteorology
