TERTIARY AND POST TERTIARY FORMATIONS. 113 



there are lens of pure plastic clays to be found in 

 many places interstratified with the prevailing sands 

 of the formation. Many of these clays have been re- 

 ceiveo* and superficially tested, but it is the intention 

 to extend the present investigation over that part of 

 the state in the near future. 



