TABLE 209. 



FREEZING MIXTURES.* 



Column i gives the name of the principal refrigerating substance, A the proportion of that substance, B the propor- 

 tion 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, /"' the lowering of temperature, G the tempera- 

 ture when all snow is melted, when snow is used, and // the amount of heat absorbed in heat units (therms when 

 A is grammes). Temperatures are in Centigrade degrees. 



* Compiled from the results of Cailletet and Colardeau, Hammer!, Hanamann, Moritz. Pfanndler, Rudorf, and 

 Tollinger. 



t Lowest tejnperature obtained. 



SMITHSONIAN TABLES. 



199 



