135 Midway Stage h 



Clayton {Midimy), Smith, Johnson, Langdon, Geol. Surv. Ala., 



1894. 



Cretaceous, White, Proc. U. S. Nat. Mus., vol. iii, p. 161, Bull. 

 4, U. S. Geol. Siirv. 



Eolignitic, Heilprin, Proc. Ac. Nat. Sci., Phila., 1881, p. 159. 



Flatwood's Clays, etc., Hilgard, Agr. and Geol. Miss., pp. no, 

 III, i860. 



fHickma?i, lyoughridge, Rep't Jackson's Purchase Region, 1888, 

 p. 18, Geol. Surv. Ky. 



Lignitic, Smith and Johnson, Bull. 43, U. S. Geol. Surv., 1887. 



Lignitic or Siliceous Claiborne, Hilgard, Agr. and Geol. Miss., 

 pp. 108, 109, III and map. 



Matthews' Landing division of the lyignitic, Smith and John- 

 son, Bull. 43, U. S. Geol. Surv., 1887. 



Middleton formation, Safford, Bull. Geol. Soc. Am., 1892, p. 



511. 



Midway division of the Lignitic, Smith and Johnson, Bull. 43, 

 U. S. Geol. Surv., 1887, p. 18. 



Midway, distinct from, and of co-ordinate rank with the lyig- 

 nitic, Ha'rris, Ann'l Rep't Geol. Surv. Ark., 1892, pp. 8, 9, 22. 



Midway or Clayton, see Clayton. 



Monterey, Langdon, Bull. Geol. Soc. Am., vol. ii, pi. 23. 



Naheola division of the Lignitic, Smith and Johnson, Bull. 43, 

 U. S. Geol. Surv., 1887. 



Porter's Creek group, Safford, Am. Jr. Sci., vol. xxxvn, 1864, 

 p. 368. 



Ripley Cretaceous, Hilgard, Agr. and Geol. Miss., pp. 85, 87, 

 i860; Gabb, Jr. Ac. Nat. Sci., Phila., vol. iv, p. 389, i860; 

 Safford, Am. Jr. Sci., vol. xxxvii, 1864, p. 367; Langdon, Bull. 

 Geol. Soc. Am., vol. ii, pi. 23, (Alabama river section). 



Ripley formation, Smith, Johnson and Langdon, Geol. Surv. 

 Ala., 1894, in Prairie Bluff and Pine Barren sections. 



Sucarnochee or Black Bluff division of the Lignitic, Smith, 

 Johnson and Langdon, Geol. Surv. Ala., 1894, p. 27. 



Tertiary (^Eocene), Featherstonhaugh, Geol. Rep't of the Ele- 

 vated Country between the Missouri and Red rivers, p. 60. 

 See also p. 39. 



Usage of the term Midway. 



Priority.— ^\^^n looking over the above synonymy, one can- 

 not help being impressed with the fact that Midway was the 

 first unobjectionable term used to designate any considerable 

 part of the series of deposits here under discussion; and which 

 designated at the same time, within a fair degree of accuracy, 

 their stratigraphic position in the Eocene scale. 



