8. DIELECTRIC CONSTANTS, FACTOR OF ASSOCIATION, HEAT OF
EVAPORATION, AND MOLECULAR SURFACE TENSION OF LIQUIDS.
(WALDEN AND CENTNERSCHWER, Zeitschr. phys. Chem., 39. (561).

9. CALIBRATION BY WATER OR MERCURY (Kohlrausch)
When a glass vessel at temperature t is weighed in air with brass weights,
and appears to hold w grams of water or 9 of mercury, its volume at
18° is w (1 + 8) or qk cub. cms. The volume expansion of glass is
taken as o'000025.

0000164 0'073583 10 000153 0073698 20 000278 0.073813
10'00156 0073595 II 000160 0'073710 21 000297 0.073825
2 0.00150 0073606 12 000169 0'073721 22 000317 0.073836
3 000145 0073618 13 000178 0.073733 23 0.00338 0073848
4 000142 0'073629 14 000189 0073744 24 0'00360 0.073860
5 000140 0'073641 15 000201 0073756 25 000383 0.073871
6 000140 0'073652 16 0.00214 0'073767 26 000407 0.073882
7 000141 0'073664 17 000229 0.073779 27 000431 0.073894
8 000143 0'073675 18 000244 0°073790 28 000457 0073905
9 000147 0'073687 19 000260 0.073802 29 000484 0073917
10 000153 0073698 20 000278 0073813 30 000512 0073928

10. ELECTROMOTIVE FORCE OF STANDARD Cells (Jaeger).

The above numbers refer to the cadmium cell with saturated
electrolyte; the Weston cell is 1'0190 volt at all temperatures.

II. ELECTRO-AFFINITY OF IONS (see p. 159).

12. EXCESS POTENTIALS IN ELECTROLYTES (see p. 176).
13. TEMPERATURE CO-EFFICIENTS OF ELECTRODE POTENTIALS
(see p. 202).

14. HEATS OF IONISATION (see p. 204).