18 
without the brown layer so characteristic of many of the above mentioned samples. 
The sample contained 2.36 "/, C and 0.204%, N. The quotient = == 
17. W.N.W. of Kullen; depth 30—35 meters. The bottom consisted 
of fine, gray clay and contain 2.29%, C. 
18. S.8S. E. of Sprogø; depth 20—25 meters. The bottom consisted of 
fine sand, with a thin, brownish gray layer, and contained 2.15 %/, C. 
In order, further, to compare the bottom in our home waters with the 
sea-bottom at greater depths, some determinations were made of the organic 
matter in bottom-samples, which were taken by the second Ingolf Expedition, 
and which the Zoological Museum kindly placed at my disposal. These bottom- 
samples were taken with Baillie tubes, which take up a cylindrical plug of 
bottom-soil quite like the above-described glass-tubes. Immediately on being taken 
up the samples were covered with alcohol and shaken. To carry out the carbon 
determinations I dried a small part of the samples in the manner described above. 
The analyses apply to the bottom-soil from the surface down to a depth somewhat 
different for the various stations. The length of the plug taken up by the Baillie 
tube is, namely, very different according to the nature of the bottom. 
We may begin with 3 stations lying south of the Ridge which runs from 
the Færoes over Iceland to Greenland. The bottom-temperature was positive. 
Station 45. 61 32" N. L., 99 43" W. L., depth 643 fm., bottom-temp. 
4.179. The bottom-sample was characterized by Bøggild in the following manner 
(Havbundens Aflejringer. Den danske Ingolf-Ekspedition 1. 3): Globigerina clay, - 
in moist condition: light, brownish gray, coarse sandy clay; in dried condition: 
light brownish gray, somewhat strongly coherent. 47.02 %/, Ca CO…. 
The bottom-sample contained 0.41 %/, carbon. 
Station 46. 619 32” N. L., 119 36” W. L., depth 720 fm., bottom-temp. 
2.49, Bøggild: Transition-clay, in moist condition: brownish gray, fine clay-sand; 
in dried condition: light gray, strongly coherent. 12.18 ?/, Ca CO,. 
The bottom-sample contained 0.56 ?/, carbon. 
Station 48. 619 32” N.L., 159 11" W.L., depth 1150 fm., bottom-temp. 
3.17”. Bøggild; Globigerina clay, in moist condition: light gray, coarse sand-clay; 
in dried condition: whitish gray, loosely coherent. 54.72 /, Ca CO... 
The bottom-sample contained 0.32 %/, carbon. 
Then follow 4 stations, lying north of the above-mentioned Ridge. The 
bottom-temperature is negative. The stations 101, 110 and 112 lie almost in a 
straight line, running in a north-easterly direction from the north-east coast of 
Iceland. Station 116 lies close in to Jan Mayen. 
Station 101. 66% 23” N.1., 120 05" W.L., depth 537 fm., bottom-temp. 
—0.7?. Bøggild: gray, deep-water clay, in moist condition: bark bluish gray, very 
fine clay; in dry condition: bluish gray, very coherent. 0.48 /, Ca CO. 
The bottom-sample contained 1.64 9/7, carbon and 0.162 9%, nitrogen; quo- 
tient £ — 10,1. 
Station 110. 66? 44” N.L., 11% 33” W. L., depth 781 fm. Bottom-temp. 
