COMPLETE FREEZING-POINT CURVES OF BINARY ALLOYS. 
35 
Table Ib.— Freezing Points of Alloys made by adding Silver to Copper. 
Series 2.—12473 grams Qrpper. 
(1) 
Total weight of 
silver present. 
(2.) 
Percentage of 
silvei’. 
(3.) 
Atomic 
percentage of 
silver. 
(4.) 
Freezing point on 
the Centigrade 
scale. 
(5.) 
Atomic fall. 
76-27 
37-64 
26-15 
916-5 
6-31* 
90-43 
42-03 
29-84 
900-2 
6-08 
110-58 
47-00 
34-22 
881-6 
5-84 
130-60 
51-16 
38-06 
866-5 
5-65 
150-70 
.54-72 
41-48 
852-9 
175-86 
58-51 
45-27 
837-2 
(778-4) 
t 
200-94 
61-71 
48-59 
823-7 
1 > 
(778-6) 
-f 
4- 
* Series 2 begins where Series I ends. The difference of '9° C. between tbe last reading of Series I 
and the first reading of Series 2 is perhaps a measure of the changes in composition that the mixture of 
Series 1 has undergone by volatilization and oxidation. If so, these two camses of error, when taken 
together, are not very important. A shift in the constants of the pyrometer during Series I might well 
amount to as much as 1° C. 
t Partial stirring was possible until the temperature fell to the eutectic point 
X The ingot of alloy weighed 319 gi’ams instead of the 325’6 grams of metal used, but several frag¬ 
ments of alloy adhering to the apparatus were not weighed, so that the loss from all causes was small 
during the experiments. 
F 
o 
