114 



Frederick Guthrie on Salt- Solutions 



Table LVI. 



I. 



II. 



III. 





A solution of 

 nitre in water 

 containing the 



that is, to 1 



weight of water 



containing the 



following 



weights of 



nitre, 



begins to solidify 

 at the following 



giving up as a 

 solid the 



following per- 

 centage of nitre, 



temperature 0., 



following : — 







00000 



00 



Ice. 



1 



0O101 



-01 



tt 



2 



0-0203 



-0 3 



n 



3 



0O309 



-0-7 



tt 



4 



00417 



-11 



it 



5 



0-0526 



-15 





7 



00753 



-2-2 





85 



00929 



-26 



>» 



10 



01111 



-29 





11-2 



01261 



-30 



Cryobydrate. 



12 



0-1364 



o-o 



Nitre. 



13 



01481 



4-2-0 





15 



0-1765 



4-60 





20 



0-2500 



4-14-0 





25 



0-3333 



4-210 





35 



0-5385 



4-35-0 





40 



0-6667 



4-410 





*433 



0-7637 



4-45-1 





#492 



0-9685 



4-547 





*55'4 



12421 



4-65-4 





*62\5 



1-6667 



4-79-7 





*70 3 



23663 



4-97-6 





7156 



2-5162 



4100-0 





74-56 



2-9308 



4-1090 





7497 



2-9956 



4-114-0 





75-2 



30323 



4-1150 





7914 



3-7939 



4-1230 





84-67 



5-5231 



4151-0 





89-94 



8-9404 



4-2010 





9511 



19-4499 



42620 





9886 



86-7193 



43000 





10000 



00 



4320-0 





Gray-Lussac. 



The graphic representation of this relationship is shown in 

 fig. 4, curve A, an ordinate of 1° C. being taken equal to an 

 abscissa of 1 per cent, of nitre. The curve, after dipping to the 

 cryohydrate, rises through 0° C. and reaches the 100 per cent, 

 at 320° C. Perhaps curve B shows the relationship better. 

 It is traced from columns II. and III. It is asymptotic to 

 the temperature-line 320° C, and shows how fused nitre and 

 fused ice are miscible with one another in all proportions. 



