CONTENTS OF THE SUPPLEMENTS OF 1878 AND 1891. 



(The General Index to the body of the Work will be found at page 689.) 



Corrections of Map, and Introduction, 



The Modern Period, 



The Pleistocene, 



The Trias, . 



The Permian, 



The Carboniferous, 



The Erian, 



The Silurian, 



The Cambro-Silurian 



The Cambrian, . 



The Huronian, . 



The Laurentian, 



Comparisons with other Countries 



Mineral Resources, . 



Notes on Fishes, Spirorbes, etc., 



