INDEX. 



239 



Silicates mineralizing Fossils, 100, 



103, 121, 220. 

 Silurian Fossils infiltrated with 



Silicates, 121. 

 Steinhag, Eozoon of, 146. 

 Stromatopora, 37, 156. 

 StromatoporidaB, 165. 

 Supplemental Skeleton, 64. 



Table of Formations, 6. 



Trinity Cape, 10. 

 Tubuli Explained, 66, 106. 

 Varieties of Eozoon, 135, 236. 

 Vennor, Mr,, referred to, 46, 57. 

 Wentworth Specimens, 91. 

 Weston, Mr., referred to, 20, 40, 



162. 

 Wilson, Dr. , referred to, 36. 

 Worm-burrows in the Laurentian, 



133, 139. 



Butler it Tanner. The SelwooU rrluting Works, Frome. and London. 



