THE DEPOSITS OF THE SEA-BOTTOM. 43 



As the stones examined in this section, are almost all larger than the ingredients of the pre- 

 ceding one, this fact is of itself a sufficient reason for treating them in a particular section. The 

 distribution of these two parts, as it will be seen, is rather different. While the ingredients not much 

 larger than o-5 rara may have been carried to their place by the currents, if they are not found in too 

 large a distance from land, this is not the case with stones over i cm in diameter; they cannot well be 

 thought to have been transported to their place in any other way than by means of ice, whether it 

 be glacial ice, river-ice, or sea-ice, and thus they may give important informations as to the ice-drift 

 in each individual place. And we may be justified in taking it for granted that the stones have been 

 transported under circumstances not essentially different from the present ones; it is especially very 

 improbable that some of the stones should have been transported by the ice during the glacial period; 

 were this the case, the deposition of loose ingredients on the sea-bottom must be exceedingly slight, 

 far slighter, than we have otherwise reason to suppose, if it had not yet been able to cover these 

 stones. If such stones were yet to be found, they would have to be sought far from the land, in 

 places where the deposition of material is now comparatively small. 



Station 2. 12 stones of sizes from o7 cm to 3 cm , all half-rounded; most of them volcanic, viz. 4 

 black, fine-grained basalt, two gray, fine-grained basalt, one brown basalt; further one red granite, 

 3 gray, fine-grained granite, one gray, fine-grained gneiss. The not volcanic ingredients, however, are 

 far more prominent here than among the finer ingredients in the specimen. 



Station 3. One very large block, 44 cm in diameter, the largest of all taken home; the surface 

 subangular, rather rough. The nature was common, red, middle-grained granite, with gray quartz, 

 red orthoclase, and black biotite. 



Station 4. One half-rounded, large block of a diameter of 32°"', the surface rather smooth. It 

 consisted of brown-gray, fine-grained basalt with small grains of feldspar; the outer part to a thick- 

 ness of ca. i cm disintegrated, of a lighter brown colour. According to the journal many large stones 

 of basalt are noted from this station. 



Station 6. 15 stones, up to io cm , all half-rounded, one somewhat ice-striated; 14 were black 

 or dark gray, fine-grained basalt, a few of these with reddish stripes, one volcanic tufa, dark gray, 

 compact, with numerous grains of basalt. 



Station 9. 18 smaller stones, up to 2 cm , half-rounded; 12 were black basalt, 5 brown, more or 

 less disintegrated and loose basalt, and one dark gray, volcanic tufa. 



Station 10. 87 stones from 2 cm to io cm , of which 80 were volcanic, viz. 41 black or dark gray, 

 more or less fine-grained basalt, 8 gray basalt, 3 reddish, vesicular lava, n brown, disintegrated basalt, 

 2 obsidian, 3 black pumice, one light lava, perhaps liparite, and 11 brownish, volcanic tufa with grains 

 of basalt, obsidian, and pumice. The rest was: 3 pieces of granite, 3 of gneiss, and one sandstone. 

 Many of the pieces, especially the not volcanic ones, were much rounded, while most of the volcanic 

 ones were more or less angular; these latter, perhaps, have their origin from the sea-bottom itself, 

 which accordingly must here be purely volcanic, as was also seen by an examination of the bottom- 

 specimens themselves. 



6* 



