Lipowitz Alloy Rod. 
Turned from a Bar Cast from Sample of Alloy supplied by Messrs. Kahlbaum. Approx. Composition ’50 Bi, '25 Pb, 
T4 Sn, 'll Ccfc Density at 20° C. = 9'66. Melting-point 65° C. 
a 2 = 1 *85 centims., approx, k = '038 to '044, therefore b' — T85, x K = '29, x B = 2*51, x c — 2'80, x c , — 2'92 centims. 
s = 1*83 sq. centims. 
CONDUCTIVITIES OF METALS AND ALLOYS AT LOW TEMPERATURES. 423 
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Duration of experiment, 5 hours 40 minutes. 
* See note on p. 407. 
