﻿Book Notices. 265 



chapters on Fossils, their nature and mode of occurrence, and the 

 gradual unfolding of the tree of life, from lowly forms of the earlier 

 geological systems to the highly organized and specialized forms of the 

 modern world. 



The book concludes with a brief description of some of the more 

 common rocks and minerals of economic importance, with explanations 

 of the uses to which they are put. 



The Story of the Earth, as told by Professor Heilprin in this useful 

 little work, is all the more readily understood from the presence of 

 the abundant illustrations, in the form of half-tone cuts, which the 

 book contains, many of which are quite new to geological text-books. 

 The book will be welcomed by many readers who wish to obtain some 

 knowledge of the history of the earth on which they live, — a history 

 not finished and completed, but which is still being written in the rocky 

 strata, now in course of deposition in all the great waters of the world. 



Frank D. Adams. 



