134 



TABLE 128.— FREEZING MIXTURES 



Column 1 gives the name of the principal refrigerating substance, A the proportion of that 

 substance, B the proportion of a second substance named in the column, C the proportion of a 

 third substance, D the temperature of the substances before mixture, E the temperature of the 

 mixture, F the lowering of temperature, G the temperature when all snow is melted, when snow 

 is used, and H the amount of heat absorbed in heat units (calories when A is grams). Tempera- 

 tures are in °C. 



SMITHSONIAN PHYSICAL TABLES 



