546 W. A. Richardson — The Origin of Cretaceous Flint. 



TABLE No. 2. 



1. Kemarks on character of flint bands with any actual measurements 

 available. 



2. Assumed number of bands present. 



3. Assumed thickness of band. 



4. Allowance for amount of flint in band. 



5. Total thickness of flint if solid, calculated from previous columns. 



6. Total thickness of solid flint in the zone. 



7. Percentage flint per zone. (Plotted in Fig. 1.) 



8. Thickness of zone. (Flinty Marsupites Chalk less than 60 feet.) 



