REPORT ON THE COMPOSITION OF OCEAN-WATER. 
27 
results. Whether I took the waters from all depths, or those from considerable depths by 
themselves, or those from small depths by themselves, I failed to see any distinct relation 
between any of the percentages and geographical position. In order now to trace the 
influence of depth, I divided my 77 waters into three categories, irrespective of 
geographical position, according to the depths (S) from which they had been taken, 
namely, into 
I. “ Surface waters ,” from a depth of less than 100 fathoms. 
II. “ Medium waters” from depths varying from 100 to 1000 fathoms. 
III. “ Deep-sea waters,” from depths greater than 1000 fathoms. 
From these divisions I drew up a number of tables (one for each component except the 
soda, which was omitted as hopeless), which again classified the three categories of waters 
according to the magnitude of the numerical value found for the respective component. 
As an example, I give the table drawn up of the quantities of lime, in which the bracketed 
numbers refer to bottom waters. 
Columns II., ML, IV., V. state how many waters of the respective classes gave a 
value for the percentage of lime in the total salts lying within ±0 '00 5, of the number 
stated in column I. 
The Quantities of Lime. 
Approximate 
percentage 
of lime 
in the total salts. 
Depth, in Fathoms. 
0-99. ' 
100-1000. 
1000 or more. 
All Depths. 
I. 
II. 
III. 
IV. 
V. 
1-585 
1 
1 
1-615 
(lj 
1-625 
1 
2 
(1) 
4 
1-635 
4 
4 
1-645 
2 
2 
1-655 
2 
1 
3 
1-665 
1 
6 
(3) 
10 
1-675 
2 
4 
6 
1-685 
2 
1 + (1) 
(3) 
7 
1-695 
1 
2 + (1) 
(2) 
6 
1-705 
2 
2 + (2) 
6 
1-715 
i 
1 
1 + (5) 
8 
1-725 
l 
1 
l + (7) 
10 
1-735 
1 
(2) 
3 
1-745 
(1) 
(1) 
1-755 
1 
1 
1-765 
i 
1 
1-805 
l 
1 
1-815 
i 
1 
1-825 
(i) 
1 
