which this iiintcrinl fiiids useful npplicntioii. C'aiivns niitl cordngc trcntcd IJY tlic IVillcstlcii proccss nrc iiot increnscd in wiglit or rigidity, ns is tlic cnsc \vlicii tarrctl niid otlicrwisc trcntctl; whilst i i high tlcgrcc of frccdoiii froiii iiiildow, iiinidd, rot, niitl tlccay, niid grcnter diirnbility gciicriilly nrc thus scciirctl.