Fig. 6. 



A section of Nummulitic Limestone from a Himalayan Peak 19,000 feet above 



sea-level. Magnified 40 diameters. 

 In the upper left corner of the plate are vertical sections (willow leaf pattern), 

 and near the upper right corner a section, in horizontal plane, of Xummiilifes. 

 Distributed over the field are numerous sections of Jililiolina, Eotalia, Texfu- 



laria, &c. 



To face p. 9. 



