certain High-temperature Boiling-points. 155 



Fig. 3. — Chart showing the relation of Boiling-point and Pressure, for 

 Water, Mercury, Sulphur, Cadmium, Zinc, and Bismuth, and the re- 

 lation of corresponding Boiling-points at 76 centim. and 4 centim. 



10 20 50 40 50 60 70 so yo 



