32 0. B. B0GGILD. BOTTOM DEPOSITS. [norw. pol. EXP. 



No. 9 is very different from the foregoing sample. The right side of 

 its curve hears a great resemblance to No. 3, and, like it, indicates a regu- 

 larly assorted sand deposit. The sample as compared with No. 8, must thus 

 have been in a situation that was considerably exposed to the currents. 

 Probably it was taken from a place somewhere in the centre of one of the 

 currents carrying water from stony-bedded rivers; No. 8 on the other hand, 

 was taken farther out at sea and most probably, must be regarded as coming 

 from a locality at the edge of the current, where the water would be likely 

 to be almost always quite still. The curve for No. 9, however, has also a 

 fairly large left part, which is too large to have been formed by division 

 and disintegration of the sandy particles. It almost seems as if the whole 

 sample consists of two parts that are formed quite independently of one 

 another; and as it is not possible to imagine them formed simultaneously, 

 it must be assumed that the sample has been stratified in such a manner 

 that either two or several layers of clay and sand have alternated with one 

 another. It is true that no such stratification has been directly observed, 

 but it may easily have been obliterated when the sample was taken. That 

 portion of the sample that consists of clay, must have been formed in one 

 or several periods, during which the circumstances were identical with those 

 prevailing at the formation of No. 8 which happens when the prevailing 

 current changes its direction away from the locality of 9. The colour of 

 the clay in No. 9 is also a fairly pure grey, although not quite so grey 

 as No. 8. This colour may have been produced by a mingling of the 

 altogether grey clay in the finer portion of the sample with the browner clay 

 in the coarser particles. 



The samples Nos. 10 and 13—15 all belong to the true deep-sea deposits, 

 and are formed far from land. All chance local circumstances such as in- 

 fluence the samples nearer the coast are consequently excluded, and more- 

 over these samples, all without exception, show quite a regular form of curve, 

 with only one maximum for both the sandy and the clayey particles. In 

 detail, however, there are certain differences between them. They have the 

 flat, broad form common to all deep-sea deposits, which are never indeed 

 made up of very much assorted material; but it must be noticed that 

 the curve draws more and more to the left the greater the distance from 

 land, and that in the greater depths of the great oceans the coarser particles 



