P AC IN I, METAMORPHISM OF PORTLAND CEMENT 



215 



TABLE 24 

 Analyses of the Cements Used in Tests with Saline Solutions 



The cubes were stored 24 hours in the damp closet, and then trans- 

 ferred to the solutions mentioned in the following table, three cubes to 

 each liquid, and there stored for three months, then broken. 



TABLE 25 



Comprcssive Streiif/tli of Mortars Stored for Three Months in Various Saline 



Solutions 



(Each value is the average of three determinations) 



Average of two determinations. 



