vii TIIK NATtl OF FOSv t* 



iX); while now and then, footprint! of birds and 

 different <|uadrupeds, impressed on the soft tand, com* 



ire of ciuict shore -conditions of deposit 

 (a) Lacustrine shells and cyprid cases point to former 

 lakes. A layer of white marl full of decaying forms of 



