J. M. Ordway on Waterglass. 185 
which a formula may be based, it seems hardly right to take 
any one chance product, and, rejecting the odd of equiva- 
lents, to set down that product with its analysis so amended, as 
out apparent alteration in the character of the compound. 
h 
which this great principle does not hold good. Wenzel says:’ 
: He roceeded to determine the equivalents by neutralizing the 
 8cids with different bases, and worked correctly so long as those 
Were protoxyds. But such a method is as little applicable 
to alumina and similar peroxyds as it is to bone eart “* Hifen 
beinerde,”—which he J 
after attempting to saturate nitric acid with alumina, he con- 
cluded that* “Das Verhaltniss der Alaunerde zum stirksten 
_ Salpetersauern, ist also beynahe . . . . wie 3849: 240.” 
ae the solub 
e 
le 
—Szconp Series, Vou. XL, No. 119.—Szpr., : 
