241 



Note. Ammonites, nodosus, jugosus , elegans, concavus, should precede 

 lower oolite, pp. 240, 241. 



* Remains of other species, bearing, with the oval form, the charac- 

 ters of nautilus or ammonites, are found in some of the succeeding strata, 

 but most frequently in the chalk marl and lower chalk. 



I 1. 



