1882.] 



On the Critical Point of Mixed Gases. 



117 



and the variation of their critical points is so nmch affected by small 

 quantities of impurity, that we might naturally suppose gases having 

 low critical points would not altogether follow this law, and the 



results of my experiments seem to confirm this view. It will be seen 

 from the diagram, Plate II, that instead of descending in a straight 

 line as it ousrht to do, according; to Pawlewski's formula, it forms a 



