146 



GOODYEAR ON GUM-ELASTIC. 



at all adhesive, — if it does so they are not well manufactured, — 

 although all the fabrics, except the hard compounds, when long 

 immersed in these oils, become swollen, yet they are not adhe- 

 sive, and when the essential oil has evaporated, they again re- 

 sume their original size. 



