68 



indenfor det Feldt, der paa Kartet er afgrændset som 



gz-aat Ler. 



Favne 



som Grændsen for Stenenes almindélige og regdmæssige 

 Forekomst i Havbundens Atieiringer. Denne Linie vil 

 nordenfor den 65de Breddegrad omtrent følge Grændsen 

 for det graa Lers Udbredelse. 



At dømme elter de Bundprøver, der er optagne søn- 



denfor den 65de Breddegrad, maa man drage den Slutning, 



at Norges Kystbanker ber er meget fattigere paa Stene 

 end længere nord. 



I Bundprøverne lia det brune Ler forekommer Stene 

 kun spredt og enkeltvis. Der er imidlertid i denne Hen- 

 seende en betydelig Forskjel mellem det nordlige og syd- 

 lige Parti af Havet. Medens vi i syd for den 72de Bredde- 

 grad kun ganske sjelden træffer Stene i Biloculinleret, er 



1 Sr Side 4o. 



were brought up within the tract marked off on the Map 

 as grey clay. 



Station 32 . . 417 fathoms 

 57 . . 161 — 



— 100 . . 194 — 

 101 . . 223 — 



— 103 . . 193 



— 114 . . 120 — 



— 115 . . 132 



— 118 . . 141 — 



— 120 . . 190 — 

 123 . . 246 — 



— 124 . . 350 — 



— 134 i . . 878 



■ — 137 . . 452 — 



— 139 . . 175 — 



— 142 . . 178 — 



— 143 . . 189 — 

 _ 147 . . 142 — 



— 164 . . 457 — 



— 174 . . 337 

 175 . . 414 



— 195 . . 107 — 



— 237 . . 263 — 



— 286 . . 447 



290 . . 191 — 

 316 . . 129 



— 324 . . 233 — 



— 334 . . 403 



— 335 . . 179 — 



— 336 . . 7o 



— 340 . . 58 



— 342 . . 523 



— 356 . . HO 



— 358 . . 93 — 



— 368 . . 315 



— 369 . . 87 



— 370 . . 109 — 



If we connect by means of a line the deepest aud 

 outermost of the above-mentioned Stations, sucb line 

 may be regarded as the limit of the commou and regula/r 

 occurrence of the pebbles in the surface-layer of the 

 ocean. The said line will. north of the 65th parallel of 

 latitude, very nearly coincide with the distribution of the 

 grey clay. 



To judge from the bottom-samples brought up south 

 of the 65th parallel of latitude, we must dra w the inference, 

 that the coastal banks of Norway in this locality have 

 their surface-layer far less abundantly supplied with pebbles 

 than is the case with the banks farther north. 



In the samples from the brown clay. the pebbles do not 

 occur otherwise than isolated. In this respect, however, 

 there is a considerable difference between the northern and 

 the southern tracts of the ocean. Thus, whereas we, south 

 of the 72nd parallel of latitude, comparatively seldom meet 



1 See i>. ln. 



