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Transactions. 



hydrate or eutectic of salt and water, and the result is evidently 

 crystals of pure ice surrounded by the crystals of the cryo- 

 hydrate. 



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F '£ 3 



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On the other hand, if the percentage of salt originally in 

 solution were greater than 235 per cent., on the temperature 

 being lowered salt-crystals would first form, and the solution 

 being thereby weakened, a further lowering of the temperature 

 would again be required for a further deposit of salt-crystals 

 to occur, and this action would continue until — 22° C. and 



