46 Bulletin 7 102 



I/acoe, R. D., Montgomery County, Virginia, Fossils. 



2d Geol. Surv. Pa., P4, vol. iii, 1890. Critical Emen- 

 dations, p. xiii, note. 



I/amb, R., A Map of the Great Dismal Swamp of Virginia 

 and the Surrounding Country, with Two Geological Cross- 

 secftions. 



The Virginias, vol. vi, p. 33, 1885. 



I^athrop, W. A., Flat Top Coal and Coke. 

 The Virginias, vol. iv, p. 162, 1883. 



Geological Se(?tion at Pocahontas. , 



The Virginias, vol. v, p. 97, 1884. 



I/atrobe, B. H., Memoir on the Sand-Hills of Cape Henry 

 in Virginia. 



Trans. Amer. Phil. Soc, vol. iv, pp. 439-443, 1799; sup- 

 plement, p. 444. 



See Bruce's Min. Jour., No. 4, 1814. 



Amer. Jour. Sci., 2d ser. , vol. xl, pp. 261-264, 1865. 



An Account of the Freestone Quarries on the Potomac 



and Rappahannock Rivers, Virginia. 



Trans. Amer. Phil. Soc, vol. vi, pp. 283-293, i! 



I^ea, Isaac, Observations on the Naiadse; and Descriptions of 

 New Species of That, and Other Families. Read March 

 16, 1832. 



Trans. Amer. Phil. Soc, vol. v, pp. 23-119, plates, 1835. 



For Virginia, see second supplement, pp. 95-119. 



I^edoux, A. R., Tin in North Carolina. 



Engr. and Min. Jour., vol. xlviii, pp. 521-522, 1889. 



I/Cidy, Jos., Description of a New Species of Crocodile from 

 the Miocene of Virginia. 



Jour. Acad. Nat. Sci. Phila., 2d ser., vol. ii, pp. 135-138, 

 1850-54. 



Remarks on a Fossil Delphinus, from the Miocene of 



Virginia, and a Fossil Crocodilian Reptile from New 

 Jersey. 



Proc. Acad. Nat. Sci. Phila., vol. vi, p. 35, 1852-53. 



Observations on Remains of Extinct Cetacea, from the 



