Simultaneously down on us came the fog, dense as cotton wool. For quite half an hour we were entangled in this absurdly insignificant bog. In getting about in a mire, the only thing to be done is to leap from one spot to another where there seems to be sufficient growth of water-plants and moss to stay one up. In doing this one loses all idea of direction, and we were, I have no doubt, forming figures of eight in our endeavours to extricate ourselves. I knew that the morass was inconsiderable in extent, and that by taking a straight line it would be easy to get out of it, but in a fog it was not possible to take a bee-line. Happily, for a moment the curtain of mist lifted, and I saw on the horizon, standing up boldly, the stones of the great circle that is planted on the crest. I at once shouted to the children to follow me, and in two minutes we were on solid land. The Dartmoor bogs may be explored for rare plants and mosses. The buckbean will be found and recognised by its three succulent sea-green leaflets, and by its delicately beautiful white flower tinged with pink, in June and July. I found it in 1861 in abundance in Iceland, where it is called _Alptar colavr_, the swan's clapper. About Hamburg it is known as the "flower of liberty," and grows only within the domains of the old Hanseatic Republic. In Iceland it serves a double purpose. Its thickly interwoven roots are cut and employed in square pieces like turf or felt as a protection for the backs of horses that are laden with packs. Moreover, in crossing a bog, the clever native ponies always know that they can tread safely where they see the white flower stand aloft. The golden asphodel is common, and remarkably lovely, with its shades of yellow from the deep-tinted buds to the paler expanded flower. The sundew is everywhere that water lodges; the sweet gale has foliage of a pale yellowish green sprinkled over with dots, which are resinous glands. The berries also are sprinkled with the same glands. The plant has a powerful, but fresh and pleasant, odour, which insects dislike. Country people were wont to use sprigs of it, like lavender, to put with their linen, and to hang boughs above their beds. The catkins yield a quantity of wax. The sweet gale was formerly much more abundant, and was largely employed; it went by the name of the Devonshire myrtle. When boiled, the wax rises to the surface of the water. Tapers were made of it, and were so fragrant while burning, that they were employed in sick-rooms. In Prussia, at one time, they were constantly furnished for the royal household. The marsh helleborine, _Epipactis palustris_, may be gathered, and the pyramidal orchis, and butterfly and frog orchises, occasionally.