62 



Dekomponeret 



af 



Saltsj i e 



30.40 pCt. 



Udekomponeret 



af 



Saltsyre 



(iS.OO pCt 



Sum 100.88 



Samlede Bestanddele : 



ALA CaO MgO 

 15.90 1.08 3.30 



Grlødn.tab Sum 



2.48 loo. ss 



FeO Fe_,( ) : 

 1.19 7.20 



CaC0 2 



12.20 



P,0 5 Si0 2 



Spor 57.47 



Station 351. 



N. B. 77" 49'. V. L. 1 



9'. 



1640 Favne (2999 

 Meter). - 1.5". Mørkbrunt Biloculinler. Mange Fora- 

 miniferer. overveiende Globigeriner. Kun faa af Slægten 

 Lituola. 



Lerets specifiske Vægt var 2.77. 



( rlødningstab 

 Jernoxydu-l . 

 Jernoxyd . 

 Lerjord . 

 Kalk . . . 

 Magnesia . 

 Kulsur Kalk 

 Fosforsyre . 

 1\ iselsyre . . 



Dekomponerel 



af 



Saltsyre 



41.72 pCt. 



[Jdekomponerei 



af 



Saltsyre 



: 1.20 pCt, 



Jernoxyd 

 Lerjord 

 Magnesia 

 Kiselsyre 



4.50 

 1.25 

 4.06 

 3.28 



0.12 

 2.05 

 23,66 

 Spor 

 7.80 



2.40 

 13.33 



Spor 

 38.41 



Væsentbg som en Følge af Biloculinlerets vexlende 

 Kalkgehalt fiser del sig ved de føregaaende Analyser, al 



Decomposed 



by 



Hydroehloric acid 



30. 10 per cent. 



Undecomposed 



by 



Hydroehloric acid 



us. oi i per cent. 



Loss by ignition . 2,48 



Protoxide of iron . 1.19 



Sesquioxide of iron 4.92 



Alumina .... 2.40 



Lime 1.08 



Magnesia.. . . . 1.80 



Carbonate of lime. 12.20 

 Phosphoric acid Traces 



Silica 0.7.5 



Sesquioxide of iron 2.34 



Alumina 13.44 



Magnesia .... 1 .50 



Silica 50.72 



1011. ss 



Constituents of Sample: 



FeO Fe,< ), 

 1.19 7.20 



Station 351. 



Lat. 77" 49' X., long. 0° 9' W.; 1640 fathonis (2999 

 metres); bottom-temperature -- 1.5°. Dark-brown Bilocu-, 

 lina clay containing a great many Foraminifera. cbiefly 

 Gfldbigerinæ ; but very few belonging to the genus lAtuola. 



Specilic Gravity of Clay 2.77. 



Loss by ignition . 4.56 



Protoxide of iron . 1 .25 



Sesquioxide of iron 4.06 



Alumina .... 3.28 



Lime 0.12 



Magnesia .... 2.05 



Carbonate of lime . 23.00 

 Phosphoric acid Traces 



Silica ...... 7.30 



Decomposed 



by 



Hydroehloric acid 



41.72 per cent. 



I ndei ompi '"''I 



by 



Hydroehloric acid 

 5 1.20 per cent. 



Sesquioxide of iron 2.46 

 Alumina .... 13.33 

 Magnesia . . . Traces 

 Silica 38.41 



100.48 



Constituents of Sample: — 

 FeO Fe,<>, Alo„ CaO MgO CaCOa TO-, SiO., 



1.25 0.52 



16.61 0.12 2.02 

 Loss liv Ignition. 



23.66 Traces 45.71 



4.56 



= 100.48. 



Principallj by reasoii ol the variable amount of lime 

 in Biloculina clay. the proportion of deposil decomposed 



