211 LiGNiTic Stage 19 



Sd., Phila. vol. «5, '28, — l^anuxem. Amcr. 

 Jour. Sd. 2d ser., vol. 6, p. 334, '48, — Hale. 

 First Biennial Report on the Geology of Alabama, 

 'so, — Tuomey. Proe. Ac. Nat. Sd. Phila., p. 

 449^ '53^ — Conrad ; p. 166, '57, — Conrad ; '64., 

 p. 212, — Conrad. Proe. Amer. Ass. Adv. Sd., 

 vol. X, p. 82, 'S7, — Winchell. Second Biennial 

 ■Report on the Geology of Alabama, ' 58 , — Tuomey. 

 Jour. Acad. Nat. Sd. Phila., vol. 4, p. 2gi, i860, 



— Conrad. Amer. Jour. Conch, vol. i, p. 23 g, "6^, 



— Whitfield. Contr. Geol. and Pal. U. S., 

 '84,—Heilprin. Proe. Acad. Nat. Sci. Phila., 

 '80, pp. :s^4-375, — Heilprin ; '81, p. 151, — 

 Heilprin. Bull. 43 U. S. Geol. Siirv., '87,— 

 Smith & Johnson. Bull, i, Geol. Surv. Ala., '86, 



— Adrich. Bull. Geol. Soc. Amer., vol. ii,p.s87, 

 'pz, — Langdon. Geol. Surv. Ala., 'p5, — Smith, 

 Aldrich, Lang don. Amer. Jour. Sci., vol. 47, p. 

 301, ' p4, — Ha rris . Da na' s Man ual Geol. , p . 888 , 

 'pS, — Harris. Bull. Amer. Pal. No. 2, 'p5, — 

 Aldrich. Bull. Amer. Pal, No. 8, ' 97,— Aldrich. 

 Bull. Amer. Pal., No. 4, '97, — Harris. Proe. 

 Acad. Nat. Sd. Phila., '96, p. 470, — Harris. 



Historical 7iotes. — This is, and ever will be, the classic or 

 type State for the marine Eocene series in America, and it is 

 especiall}^ true of the stage now under consideration, for while 

 beds presumably representing this stage in Texas, Arkansas, 

 Mississippi and other States are well developed and present some 

 interesting features, they are nearly or wholly destitute of 

 molluscan fossils, a want that renders their age and boundaries 

 vague or ill defined. It seems then worth while to pause and 

 study the development of Lignitic stratigraphy and paleontol- 

 ogy under this heading. 



Passing at once over the vague generalities of Maclure and 

 the somwhat reformed classification of Neozoic terranes by 

 Vanuxem, the first account of a personal observer in the Lig- 

 nitic deposits of this State is that of C. S. Hale, 1848. He 

 attempted the establishment of a generalized sedtion of the 

 Eocene of this State as follows : 



