EUTECTIC RESEARCH: THE ALLOYS OF LEAD AND TIN. 



TABLE II. Differential Cooling-curve Observations, Series B. 



in the alloy containing 18 per cent, of tin, while the alloys containing 17, 15, 12, 10 

 and 8 per cent, of tin pass through the corresponding temperature without any 

 retardation of cooling. The curves of alloys containing less than 8 per cent, of tin are 

 not reproduced, as they are entirely blank down to the ordinary temperature. 



In Series C, on the other hand, there is a very small peak at the eutectic 

 temperature in the alloy containing 14 per cent, of tin, from which it would seem that 

 the greater sensitiveness attained with larger masses of alloy has rendered possible 

 the detection of smaller quantities of eutectic. While this is probably the case, the 



VOL. CCIX. A. O 



