REPORT ON THE COMPOSITION OF OCEAN-WATER. 
63 
Table IV. 
Referring to a Sea- Water of the Salinity of Ekraans “ D.” 
General Equation : 4 S = 4 S 15 . 56 ± y. 
t ° 
Value of ± y according to 
Difference between Observers. 
Dittmar. 
Thorpe and 
Rucker. 
Ekman. 
Hubbard. 
T-D. 
E-D. 
H-D. 
T-E. 
0 
2-18 
2-24 
2-21 
2-11 
+ •06 
+ •03 
-•07 
+ •03 
5 
1-79 
1-81 
1-78 
1-75 
+ •02 
-•01 
-•04 
+ •03 
10 
1-10 
1-08 
1-08 
MO 
-•02 
- -02 
0 
0 
15-56 
0 
0 
0 
0 
0 
0 
0 
0 
20 
1-10 
1-08 
1-07 
1-14 
.-•02 
-•03 
+ •04 
+ •01 
25 
2-49 
2-50 
2-46 
2-62 
+ •01 
-•03 
+ T 3 
+ •04 
30 
4-04 
4-10 
Not determined. 
4-29 
+ •06 
1 
+ •25 
1 
This table, again, needs not be commented upon. To show more fully what the 
A(yf s given as T— D, See., mean, let us translate them into differences of temperature. 
From a table given below (as Table V.) we see that, for 
t= 0° 5° 10° 20° 25° 30° 
= —20° 9°T 5°-9 3°-7 3°'3 3°-l 
A(S) 
whence we easily compute the temperature-equivalents for the divergencies in specific 
gravity given as T — D, See. The result is as follows : — 
Table IV. (A). 
t . 
T-D 
E-D 
H-D 
T-E 
0 ° 
-l°-2 
- 0°-6 
+ r -4 
- 0°*6 
5 
- 0-18 
+ 0 -09 
+ 0 -36 
-0 -27 
10 
+ 0 -12 
+ 0 -12 
0 
0 
20 
-0 -07 
-0 -11 
+ 0 T 5 
+ 0 -04 
25 
+ 0 -03 
-0 TO 
+ 0 -43 
+ 1 T 3 
30 
+ 0 -18 
+ 0 -75 
