HEAT. 61 



Degree of - 



MIXTURES. Thermometer Sinks. Cold 



PAST?. produced. 



Sulphate of Soda 3 j From+5Q o to- 3 o .... 53 o 



Diluted Nitric Acid 2 J 



Sulphate of Soda 6 ~\ 



"Muriate of Ammonia ... 4 f , - en 



Nitrate of Potash 2 T fcU 



Diluted Nitric Acid 4 ) 



Sulphate of Soda 6 "J 



Nitrate of Ammonia 5 > -f50 to 14 .... 64 



Diluted Nitric Acid 4 J 



Phosphate of Soda 9 ~) ,. A 10 <, 



Diluted Nitric Acid ... 4 j . tO - 12 y/.V* 



Phosphate of Soda 9 "> 



Nitrate of Ammonia 6 > -f50 to 21 71 



Diluted Nitric Acid 4 J 



Sulphate of Soda 8 | 4 



Muriatic Acid 5 j 



Sulphate of Soda 5 1 _I_CA _i_ 9 ^T 



Diluted Sulphuric Acid 4 j 3 47 



N. B. If the materials are mixed at a warmer temperature than that expressed in the 

 Table, the effect will be proportionably greater ; thus, if the most powerful of these mix- 

 tures be made when the air is + 85, it will sink the thermometer to -+ 2. 



TABLE, consisting of Frigorific Mixtures composed of Ice, with chemical 

 Salts and Acids. 



TRIGORIFIC MIXTURES WITH ICE. 



Degree of 



egr 

 MIXTURES. Thermometer Sink*. Cold 



PASTS. produced. 



Snow, or pounded Ice 2 



Muriate of Soda 1 



Snow, or pounded Ice 5 



Muriate of Soda 2 



Muriate of Ammonia 



to - 18 



to 5 C 



to 12 



Snow, or pounded Ice 24 "J t 



Muriate of Soda 10 ( 



Muriate of Ammonia 5 f 



Nitrate of Potash 5 J 



Snow, or pounded Ice 12 ) ^ 



Muriate of Soda 5 > to 25 



Nitrate of Ammonia.. 5 J 



DlVdsuiph^cAdd :::::::::: I l^+wt.-M .. 55 

 Mu^icAcid::::::::-.:::::::: I } + *- 



DlTed Nitric' Acid '. \ \ \ \ '. '. '. '. '. \ '. \ '. I } + 32 .o - 30 . . 6 2 



MurTa,eof-Li m -e::::::::::::::.: I } + 82 to - 40 - 



Crystallized 'Muriate of Lime.'!!!'.'. 3 } + 32 to - 50 ..82 



por S h':.:::::::::::::.:.:::::: J } +S9 to - 5 i .. 8S 



N.B. ^The reasons for the omissions in the last column of this Table is, the ther 

 mometer 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. 



