14 • Report of the State Geologist. 



Chapter 2 Palaeontology and the Doctrine of Evolution. 



Sec. 1. The Species; its Variations. 



Definition of Species ; Natural Selection / Passage Forms ; 

 Transitions hetween Genera and hetween the Grand Divisions ; 

 Saltation . 



Sec. 2. Causes of Variations. 



Insufficiency of the Theory of Selection ; Influence of the Me- 

 dium ; American Neo-IarrtarTcism. 



Sec. 3. Effects of External Causes. 



Ada,ptation • Correlation; Rudimentary Organs; Parallelism, 

 and Convergence ; Aberrant Types and Synthetic Types. 



Sec. 4. General Tendency of Evolution. 



Hypothesis of the Vital Force of Various Groups ; Law of 

 Improvement. 

 Chapter 3. Ph}logeny. 



Sec. 1. Natural Classification and Phylogeny. 



Definition ; Principles of Classification. 



Sec. 2. The Method of Comparative Anatomy. 



Evolution of OrgaMS. 



Sec. 3. Embryogenic Method. 



Law of Parallelism of Ontogeny and Phylogeny; Fmhryogeny 

 of Fossil Forms ; Instances of Regression ; Embryogenic Accele- 

 ration ; Acceleratio7i of Regression ; Geratology. 



Sec. 4. Method of Geologic Continuity. 



Ap>plication of the Principle of Continuity ; Order of Appear- 

 ance of New Forms ; First Faunqb ; Origin of Life., — Precam- 

 brian Deposits. 



Chapter 4. Distribution of Organisms in Geologic Time, with 

 reference to the conditions of the Medium. 



Sec. 1. Definition of Facies. 



Sec. 2. Influence of the Depth of the Sea. 



Littoral Facies ; Pelagic Fades ; Abyssal Facies. 



Sec. 3. Influence of the E'ature of the Aquatic Medium. 



Fresh-water Facies; Brackish-water Facies; Muddy loater 

 Facies; Coral Facies. 



Sec. 4. Influence of Climate. 



Effect of Temperature ; Climate of the Silurian and Devonian ; 

 Climate of the Carboniferous ; Climate of the Jurassic ; Climate 



