German Silver Rod. 
Turned from a Rod supplied by Messrs. Johnson and Matthey of Composition '62 Cu, -15 Ni, -22 Zn, approx. 
Density at 22° C. = 8'67. 
% 2 = 4’26 centims., approx, h = '04 to ’06, therefore b' = '22, x A = '32, x B = 5 '02, x a = 5*34, x 0 , = 5’49 centims., 
s = 1’83 sq. centims. 
420 
PROFESSOR C. H. LEES: THERMAL AND ELECTRICAL 
t- 
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Duration of experiment, 8 hours 20 minutes. 
* See note on p. 407. 
