689 
mercury-containing tin. What was also very clearly to be seen here 
was this that, when a temperature lying above the melting-point of 
tin, was rapidly Jowered, the transformation failed to appear, and 
the metastable prolongation of the upper branch could be followed 
180 
COPPER-TIN. 
Temperature E. F, in milli-Volts 
158.0° 0.52 
183.0° 0.63 
198.0° 0.71 
218.8° 0.79 
210509 0.75 
207.09 0.74 
191.09 0.67 
181.09 0. 62 
153.09 0. 50 
150.29 0. 49 
202.09 0. 73 
