contained in Mr. Walker's Publication, 1808. 179 



Table II. 



This Table consists of frigorific mixtures, composed of ice, 

 with chemical salts and acids. 



Frigorific Mixtures, with Ice. 



Mixtures. 



Thermometer sinks. 



Degrees of cold 

 produced. 



Snow, or pounded ice, 



2 parts 

 1 



e 



to 



8 



a 

 g 

 S 



_ 



to— 5° 



. * 



Snow, or pounded ice, 

 Muriate of ammonia . 



5 parts 

 2 



1 



to — 12° 



# 



Snow, or pounded ice, 



Muriate of ammonia . 

 Nitrate of potash .... 



24 parts 

 10 



5 



5 



to— 18° 



# 



Snow, or pounded ice, 

 Nitrate of ammonia . . 



12 parts 

 5 

 5 



to — 25° 



* 



Snow 



3 parts 

 2 



From + 32° to — 23° 



55 



Diluted sulphuric acid 



Snow 



3 parts 

 5 



From + 32° to — 27° 



59 



Snow 



Diluted nitric acid . . . 



7 parts 

 4 



From + 32° to — 30° 



62 



Snow 



4 parts 



5 



From + 32° to — 40° 



72 





Snow 



2 parts 

 3 



From + 32° to — 50° 



82 



Cryst. muriate of lime 



Snow 



3 parts 

 4 





83 





From 



+ 32° to — 51° 



N.B. The reason for the ofnissions in the last column of 

 this table is, the thermometer sinking in these mixtures to 

 the degree mentioned in the preceding column, and never 

 lower, whatever may be the temperature of the materials at 

 mixing. 



M 2 Tabic 



