1053 
put a fresh amalgam into the cells, while a fresh solution of ead- 
mium sulphate was also introduced. We found that in 4 cells (out 
of eleven) the 6-cadmium had been transformed into the a-modifi- 
cation. The E. M. F. of these cells was 0.0474 Volt at 25°.0. 
(See our third paper on the allotropy of cadmium). 
9. These a-cells were systematically investigated at 25°.0, 20°.0 and 
15°.0 respectively, in order to determine their temperature coefti- 
cients. Table I contains the results. 
Tl ; 
ie measurements may be represented by the equation: 
LH) = 0,04742 — 0,000200 (¢ —25) Volt... . (3) 
TABLE} 
E. M. F. of «-Cells (Volt). 
Date {TEMPE} Cen, | CellH, | CellH; | CellH, | Mean 
Jan. 14 25.0 | 0.04751 | 0.04740 | 0.04763 | 0.04758 
15am. | 25.0 | 0.04725 | 0.04797 | 0.04710 | 0.04714 
0.04742 
15 p.m. | 25.0 | 0.04721 | 0.04790 | 0.04710 | 0.04710 
16 25.0 | 0.04728 | 0.04794 | 0.04731 | 0.04731 
Jan. 18 20.0 | 0.04848 | 0.04837 ES ra 
19 a.m. | 20.0 | 0.04843 | 0.04833 ES a 
19 p.m. | 20.0 \ 0.04849 | 0.04841 = ie 
19 night | 20.0 | 0.04832 | 0.04836 — | == 0.04841 
20 20.0 | 0.04849 | — | BE 
21 | 20.0 | 0.04843 | — | 0.04850 | 0.04860 
22 20.0 | 0.04893 | — 0.04833 0.04843 
Jan. 23 am. 15.0 | 0.04908 - = — | 0.04944 | 0.04047 
23 pm. 15.0 | 0.04925 | — | 0.04966 | 0.04968 
| | | | | _0.04943 
24 15.0 0.04959 = — _ 0.04948  0.04950 
| | 
25 15.0 | 0.04924 | or | 0.04928 | 0.04937 
oS oN I EN ee! 
| | 
Jans 25 | 25-0 0.04752 | — 0.04759 | 0.04761 | 
| 
| 
