. Transactions of the Royal Society of New Zealand. 1 ? On the other hand, if the percentage of salt originally insolution were greater than 23 5 per cent., on the temperaturebeing lowered salt-crystals would first form, and the solutionbeing thereby weakened, a further lowering of the temperaturewould again be required for a further deposit of salt-crystalsto occur, and this action would continue until — 22° C - Scott.—Besistance of Steel to Mechanical Shock. 521 23*5 per cent, of salt was reached, when, as before, the salt andice crystals would separate out side by side, forming the in-timat
. Transactions of the Royal Society of New Zealand. 1 ? On the other hand, if the percentage of salt originally insolution were greater than 23 5 per cent., on the temperaturebeing lowered salt-crystals would first form, and the solutionbeing thereby weakened, a further lowering of the temperaturewould again be required for a further deposit of salt-crystalsto occur, and this action would continue until — 22° C - Scott.—Besistance of Steel to Mechanical Shock. 521 23*5 per cent, of salt was reached, when, as before, the salt andice crystals would separate out side by side, forming the in-timate mixture, the cryohydrate or eutectic ; but in this casewe should have crystals of pure salt surrounded by crystalsof the eutectic. At each stage of the solidification there would be a retarda-tion in the fall of the thermometer, which on reaching — 22° remain stationary till the whole mass solidified. Itis evident that for all mixtures other than 23*5 per cent, thereare at least two distinct retardations—the first, dependento
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