34 HISTORICAL GEOLOGY 



Blackwelder and Barrows: Elements of Geology, Part 2 (American Book 

 Co., 1911). An elementary discussion of historical geology. 



Norton: Elements of Geology, Part 3 (Ginn and Co., 1905). A very elemen- 

 tary discussion of historical geology. 



Tarr: Elementary Geology, Part 3 (Macmillan Co., 1897). A very brief dis- 

 cussion of earth history. 



Brigham: A Text-book of Geology (Appleton and Co., 1902). Contains a brief 

 treatment of historical geology. 



Dana: Text-book of Geology, Part 4 (American Book Co., 1897). A brief dis- 

 cussion of earth history. 



Grabau: The Principles of Stratigraphy (A. G. Seiler and Co., 1913). An 

 elaborate account of stratified rocks and their significance. 



Shimer: An Introduction to the Study of Fossils (Macmillan Co., 1914). An 

 elementary treatment of the subject of paleontology. 



Zittel-Eastman : Text-book of Paleontology, 2 Vols. (Macmillan Co., 1913). 

 An elaborate treatment of the subject of paleontology. 



Woods: Paleontology (Cambridge University Press, 1902). A brief discus- 

 sion of invertebrate paleontology. 



Jordan and Kellogg: Evolution and Animal Life (Appleton and Co., 1907). 

 Organic evolution discussed in an easily understood manner. 



Moulton: Introduction to Astronomy, Chapter 15 (Macmillan Co., 1906). 

 A brief discussion of the evolution of the Solar System. 



Certain of the larger works above named, especially Willis' 

 " Index to the Stratigraphy of North America," Chamberlin and 

 Salisbury's "Geolog}^" and Geikie's " Text-book of Geology," 

 are very rich in important references to the literature dealing with 

 historical geology. 



