34 Bulletin 7 90 



(Vol. I, No. 3.) Fossil Shells of the Tertiary Formations of 



North America, Illustrated by Figures Drawn on 

 Stone from Nature, pp. 29-38. 

 Philadelphia, Aug., 1833. 



( Vol. I, No. 4. ) Fossil Shells of the Tertiary Formations of 



North America, Illustrated by Figures Drawn on 

 Stone from Nature, pp. 39-46. 

 Philadelphia, Oct., 1833. 



( Vol. I, No. 3. ) Fossil Shells of the Tertiary Formations of 



North America, Illustrated by Figures Drawn on 

 Stone from Nature, pp. 29-56, pis. 15-20, map. 

 Republished with plates and map, Mar. i, 1835. 



Oil the Geological Position of the Eocene Deposits of 



Maryland and Virginia. 



Amer. Jour. Sci., 3d ser. , vol. xlvii, pp. 301-304, fig. i- 



3. i«94- 



For further reference, see under Dall, W. H. 



Hayden, C. B., On the Rock Salt and Salines of the Holston. 



(West Virginia). 



Amer. Jour. Sci., vol. xliv, pp. 173-179, 1843. 



On the Ice Mountain of Hampshire County, Virginia, 



with a Proposed Explanation of its Low Temperature. 

 Amer. Jour. Sci., vol. xlv, pp. 78-83, figure, 1843. 



Hayden, H. H., Native Gold in Virginia, Found in Talcose 



Slate. 



Amer. Jour. Sci., vol. xx, p. 164, 1831. 



Hayes, C. Willard, The Over-thrust Faults of the Southern 

 Appalachians. 



Bull. Geol. Soc. Amer., vol. ii, pp. 141-154, pis. 2-3, 

 fig. I, 1 89 1. Discussion, pp. 153-154. 



(^Abst.) Amer. Geol., vol. vii, p. 262, 1891. 



The Southern Appalachians. 



(The Physiography of the United States). 

 Nat. Geog. Mon., 1896, pp. 304-336, map. 

 American Book Co., New York. 

 Virginia more or less mentioned throughout the article. 



Heilprin, A., A Comparison of the Eocene Mollusca of the 

 Southeastern United States and Western Europe, in Re- 

 lation to the Determination of Identical Forms. 



Proc. Acad. Nat. Sci. Phila., vol. xxxi, pp. 217-225, 1879. 



■ On the Relative Ages and Classification of the Post-Eo- 

 cene Tertiar)' Deposits of the Atlantic Slope. 



