794 
LORD RAYLEIGH OH THE CLARK CELL AS 
Table XY.—In terms of (38) at 51° Fahr. 
Temperature. 
(Falir.) 
Date, 1885. 
(35) 
reduced to 
51°. 
(1) 
observed. 
(1) 
calculated. 
(10) 
observed. 
(39) 
obseived. 
(39) 
calculated. 
(40) 
observed. 
O 
47 
Nov. 8 . . . 
1-0003 
1-0013 
1-0013 
1-0014 
1-0154 
1-0155 
1-0152 
48i 
„ 1 (aft.) . 
1-0003 
1-0008 
1-0006 
49i 
„ 2 . . . 
1-0003 
1-0004 
1-0003 
1-0006 
10150 
1-0151 
10149 
51 
Oct. 31 . . . 
1-0003 
•9996 
■9996 
•9997 
1-0148 
1-0147 
1-0147 
51 
Nov. 7 . . . 
1-0004 
•9997 
•9996 
1-0000 
. , 
5H 
„ 18 . . . 
1-0004 
•9993 
•9993 
52 
,, 12 (morn.) 
1-0004 
•9994 
•9991 
524 
„ 17 . . . 
1-0004 
•9994 
■9989 
53 
„ 21 . . . 
1-0003 
•9988 
•9987 
531 
,, 11 (even.) 
1-0004 
•9989 
•9985 
. . 
54 
„ 20 . . . 
1-0003 
•9982 
•9983 
. . 
564 
Oct. 28 . . . 
1-0003 
•9971 
•9972 
•9973 
1-0133 
1-0135 
1-1032 
561 
Nov. 12 (aft.) . 
•9974 
•9972 
. . 
57 
Oct. 27 . . . 
1-0003 
•9970 
•9970 
•9972 
1-0134 
1-0134 
1-0133 
574 
Nov. 13 . . . 
1-0004 
•9970 
•9968 
. . 
581 
„ 4 . . . 
1-0004 
•9964 
•9965 
•9963 
1-0131 
1-0131 
1-0130 
61 
Oct. 30 . 
1-0004 
•9955 
•9953 
•9955 
1-0125 
1-0125 
1-0125 
67 
Nov. 27 . . . 
1-0004 
•9928 
■9928 
•9927 
1-0111 
1-0113 
1-0110 
Table XYI.—In terms of (38) at 51° Falir. 
Temperature. 
(Fahr.) 
Date, 1885. 
(37) 
ol served. 
(37) 
calculated. 
Temperature. 
(F abr.) 
Date, 1885. 
(36) 
observed. 
(36) 
calculated. 
O 
32 
Nov. 10 . . . 
1-0051 
1-0050 
O 
32 
Nov. 11 (aft.) . 
1-0067 
1-0067 
32 
„ 11 (aft.) . 
1-0050 
1-0050 
32 
„ 11 (even.) 
1-0066 
1-0067 
32 
„ 11 (even.) 
1-0051 
1-0050 
32 
,, 12 (morn.) 
1-0070 
1-0067 
40 
n 17 . . . 
1-0028 
1-0027 
32 
„ 12 (even.) 
1-0068 
1-0067 
41f 
„ 21 . . . 
1-0021 
1-0022 
40 
„ 17 . . . 
1-0038 
1-0041 
474 
„ 8 . . . 
1-0003 
1-0003 
41f 
„ 21 . . . 
1-0028 
1-0035 
48f 
„ 12 (aft.) . 
•9995 
■9998 
474 
„ 18 . . . 
1-0010 
1-0013 
49| 
„ 12 (morn.) 
•9996 
•9996 
494 
„ 13 . . . 
1-0003 
1-0005 
494 
„ 13 . . . 
•9993 
•9996 
504 
„ 2 . . . 
1-0003 
1-0001 
504 
2 
. . 
•9997 
•9992 
504 
„ 10 . . . 
1-0001 
1-0001 
524 
Oct. 31 . . . 
•9986 
■9985 
53 
Oct. 31 . . . 
•9992 
•9991 
524 
Nov. 18 . . . 
•9984 
•9985 
53 
Nov. 18 . . . 
•9992 
•9991 
574 
Oct. 27 . . . 
•9966 
•9966 
574 
Oct. 27 . . . 
•9970 
•9971 
574 
„ 28 . . . 
•9967 
•9966 
574 
„ 28 . . . 
•9971 
•9971 
61f 
„ 30 . . . 
’9946 
•9949 
61f 
30 . . . 
•9950 
•9952 
66 | 
Nov. 4 . . 
•9926 
•9928 
664 
Nov. 4 . . 
•9931 
•9929 
674 
„ 20 . . . 
•9916 
•9925 
674 
„ 20 . . . 
•9923 
•9925 
674 
„ 7 . . . 
•9922 
■9924 
674 
„ 7 . . . 
•9925 
•9924 
For (39) and (40), prepared with unsaturated solution, the temperature-coefficient 
is exactly the half of that for the saturated cells. Reckoned in Fahrenheit degrees, 
it is '00021, or in Centigrade degrees '00038. The agreement with this value is 
shown by the column calculated from the formula 
1 '0134(1 -'000212(^ — 57)}. 
