240 Proceedings of the Royal Society of Edinburgh. [Sess. 
Table II.— continued. 
Serial 
Number. 
Chlorine 
per Litre. 
Relative 
Density 
A 18‘ 
Variation 
from Mean. 
Specific 
Conductivity 
1/^25* 
Variation 
from Mean. 
Minimum 
Deviation. 
Variation 
from Mean. 
44 
20-580 
1-02773 
+ 
00002 
■054787 
00000 
86946" 
+ 29" 
45 
73 
+ 
2 
787 
00 
915 
-02 
46 
79 
+ 
8 
787 
00 
917 
00 
47 
72 
+ 
1 
787 
00 
917 
00 
55 
5) 
68 
- 
3 
668 
- 
12 
917 
00 
58 
55 
69 
- 
2 
815 
+ 
03 
908 
-09 
59 
55 
69 
- 
2 
815 
+ 
03 
911 
-06 
60 
55 
66 
- 
5 
867 
+ 
08 
906 
-11 
61 
70 
- 
1 
782 
00 
913 
-04 
1-02771 
± ■ 
■00003 
•054788 
± ■ 
00003 
86917 
±06 
8 
20-615 
1-02770 
_ 
•00001 
054922 
+ ' 
•00008 
86949 
+ 03 
9 
5J 
74 
+ 
3 
964 
+ 
12 
922 
+ 06 
43 
5J 
73 
+ 
2 
861 
+ 
02 
946 
+ 30 
48 
55 
74 
+ 
3 
787 
- 
06 
919 
+ 03 
49 
55 
72 
+ 
1 
787 
- 
06 
917 
+ 01 
50 
55 
73 
+ 
2 
839 
- 
01 
916 
00 
51 
55 
68 
— 
3 
903 
+ 
06 
901 
-15 
52 
55 
67 
- 
4 
903 
+ 
06 
911 
-05 
53 
55 
74 
+ 
3 
903 
+ 
06 
901 
-15 
54 
55 
70 
— 
1 
787 
- 
06 
907 
-09 
56 
>> 
72 
+ 
1 
668 
- 
18 
910 
-06 
1-027716 
± -00002 
•054848 
± -00007 
86916 
±08 
' 1 
! I 
In Table III. are given the mean values for density, conductivity, and 
deviation for the various values for total chlorine. Those cases only are 
considered where there were more than four samples of the same chlorine 
value. 
TABLE III. 
Chlorine. 
Mean 
Relative 
Density 
A 18- 
Average 
Variation. 
Mean 
Specific 
Conductivity 
1/P25* 
Average 
Variation. 
Mean 
Deviation. 
Average 
Variation. 
(a) 
20-439 
1-02747 
•00001 
•054418 
•00006 
86899" 
9" 
W 
•580 
771 
3 
788 
3 
917 
6 
(c) 
•615 
772 
2 
848 
7 
916 
8 
(d) 
•756 
787 
5 
•055149 
6 
932 
8 
(4 
•792 
795 
4 
192 
10 
937 
4 
(/) 
•825 
800 
2 
362 
10 
941 
7 
(9) 
21-533 
806 
0 
439 
2 
941 
7 
(h) 
•533 
890 
2 
•056964 
7 
977 
5 
