320 



INDEX 



Patuxent formations, 45. 



Patuxent river, section on, 72. 



Piedmont Plateau, 21. 



Pierce, James, 26, 41. 



Pilsbry, H. A., 17. 



Pisgah, fossils from, 74, 76, 78, 80, 172, 

 191. 



Piscataway, 33, 34. 



Piscataway, fossils from, 75, 77, 79, 81, 

 124, 125, 126, 128; 131, 133, 135, 136, 

 147-149, 151, 157, 159-165, 169, 171- 

 173, 175, 176, 178, 180, 181, 185, 188, 

 191, 193, 195, 197, 201, 202, 223, 226, 

 227, 233, 242, 255, 256. 



PiscataAvay, section at, 72. 



Piscataway Creek, fossils from, 74, 76, 

 78, 80, 150. 



Piscataway stage, 58, 68, 69, 71, 73, 74, 

 75, 76, 77, 78, 79, 80, 81. 



Piscataway stage described, 60. 



Piscataway stage, distribution in, 74, 

 80. 



Piscataway stag'e, fossils of, 61. 



Pleistocene deposits described, 48. 



Pomonkey Neck, fossils from, 74, 76, 

 78, 80, 132, 133, 143, 184. 



Popes Creek, fossils from, 75, 77, 79, 

 81, 102, 106, 108, 115, 123, 128, 130, 

 131, 136, 138, 139, 142, 146, 149, 150, 

 152, 155, 159, 161, 163-166, 169, 171, 

 173, 175, 176, 177, 179, 180, 182, 185, 

 187, 188, 192, 194, 195, 197, 198, 199, 

 202, 203, 210, 225. 



Popes Creek, section near, 70, 71. 



Post Eocene, fossils from, 75, 77, 79, 

 81. 



Port Tobacco, 32, 66. 



Port Tobacco, fossils from, 75, 77, 79, 

 81, 115, 124, 125, 131, 145, 151, 152, 

 159, 160, 179, 193, 201. 



Potapaco stage, 58, 65, 69, 70, 72, 75, 

 77, 79, 81. 



Potapaco stage described, 65. 



Potapaco stage, distribution in, 75. 



Potapaco stage, fossils of, 65. 



Potomac Creek, 75. 



Potomac Creek, fossils from, 74, 75-80, 

 100, 124-126, 129, 131-134, 136, 137, 

 140, 141, 144, 146-148, 150-157, 162, 

 163, 166, 170, 172, 173, 176, 178-182, 

 186, 189-191, 193, 195, 197, 201, 218, 

 225, 226, 231, 232, 237. 



Potomac Creek, section near, 69, 70. 



Potomac Group, 45. 



Potomac River section, 67. 

 Potomac river, section on, 67. 

 Preface, 15. 

 Probst, J., 104. 



B. 

 Eancocas formation, 45. 

 Earitan formation, 45. 

 Eeedy Run, fossils from, 74, 76, 78, 80, 



170, 172, 182, 191. 

 Rogers, H. D., 28, 42. 

 Rogers, William E,, 27, 28, 41, 42, 51. 

 Rolpli's Landing, fossils from, 74, 76, 



78, 80, 148, 150, 162, 173, 178, 181, 



195, 197. 

 Rolph's Landing, sections near, 73. 

 Ruffin, Edmund, 42. 



S. 



Say, Thomas, 26, 42. 



Scbuchert, Charles, 16, 204. 



Schopf, Johann David, 24, 42. 



Seat Pleasant, fossils from, 74, 76, 78, 



80, 120, 148, 149, 162, 170, 172, 181- 



183, 192, 235, 238, 240, 254. 

 Seat Pleasant, section near, 71. 

 Secondary formation, 25. 

 Section at Glymont, 68. 

 Section near Lyons Creek, 72. 

 Sections near Potomac Creek, 69-70. 

 Section of Potomac river, 67, 68. 

 Section of western portion of bluff at 



Aquia Creek, 69. 

 Sedimentation, depth of, 57. 

 Severn river, fossils from, 74, 76, 78, 



80, 179, 191, 232. 

 Severn river, section near, 13. 

 Shark River formation, 205. 

 Shattuck, G. B., 30, 49. 

 Silvester, R. W., 5. 

 Smith, John Walter, 5. 

 Southeast Creek, fossils from, 74, 76, 



78, 80, 188, 189. 

 South River, fossils from near, 74, 76, 



78, 80, 145, 148-150, 172, 173, 178, 



179, 181, 183, 191-193; 195, 197, 200, 



202, 232. 

 Soiith River, section at, 73. 

 Species, distribution of, 73. 

 Stratigraphical and iDaleontological 



characteristics, 57. 

 Strike and dip of Eocene deposits, 53. 

 Suessonian, 92. 

 Swan Creek, fossils from, 74, 76, 78, 80, 



191. 



