236 



INDEX. 



Schlotheimia D'Orbigniatia, 04, 05, 133. 



extranodosa, 134. 

 i. 135. 



lacunata, 135. 



lacunatus, Gey., 135. 



Leigneletii, 94. 



Leigneletii, Wall., 132, 133. 



marmoiea, 134. 



montana, "Wall., 134. 



Moreana, 93, 128. 



pachygaster, 134. 



posttaurina, 134. 



Quenstedti, Gey., 135. 



rotunda, 135. 



scolioptycha, 134. 



striatissima, 129. 



Speziana, Can.. 136. 



trapezoidale, 134. 



tauriua, 134. 



ventricosa, 128, 133, 134. 

 Schlotheimian Series, 57, 105, 106, 122. 

 Schluter, 92, 94, 97, 98, 101. 

 Schwartz, 2, 14, 216. 

 Scipionis Bed, 103, 176. 

 Scotland, 88. 



Secondary Radical, 3, 22, 71. 

 Seebach, 94, 114. 

 Selection, physical, ix, 52. 

 Semper, 8, 30. 



Semur, 60, 91-93, 95-99, 102-105, 114, 121, 122, 129, 

 130, 132, 133, 135, 137-139. 141-146, 148, 156, 

 157, 159, 160, 162, 164, 166-160, 171, 175-179, 

 183, 184, 186-193, 195-198, 206, 208, 209, 211, 

 212, 216, 217. 

 Senile Degeneration, 75. 

 Senility in Orthoeeratites, 31, 35. 



in GoniatitiiKi'. 35. 



less marked in ancient tonus. 35. 



in the individual described by D'Orbigny, 36. 

 Separation. Geographical, 27. 

 Sepioids, 18, 26, 48, 53. 

 Septum, 9. 

 Shaler, 46. 



Sheaths of the Siphon ( Endocones), 12. 

 Siebenburgen, 111, 159. 

 Silesites, 24. 

 Silphologic, note. 

 Siphon, structure of. 11, 13. 



collar of, 17. 



changes in, during growth. 34. 



funnels of, 13. 



position of, 51, 52. 



importance in ancient groups, 51, 52. 

 Siphonal cajcum, 9, 13, 14, 19. 

 Solenhofen, 51. 

 Somerset, 02. 144. 

 Sorbonne, 137, 138. 

 South America, 86, 87. 

 Southeastern France, 102. 

 s. mill England, t.8. 



Southern Alps, 87. 



South German Basin, S7, 94, 96, 97, 99, 101, 114, 118, 



218. 

 South Germany, S8-102, 104, 107, 108, 113, 114, 110, 



117, 121, 135, 163. 

 Sowerby, 68, 121, 15S, 178, 188, 206, 219. 

 Spain, 86, 108. 

 Specialization, causes of, 52. 

 Species, definition of, 56. 

 Spezia, 116, 154, 166. 

 Spitzbergen, 5 note, 86. 

 Sphseroceras, 23, 32. 

 Sphseroceras refractum, 32, 47. 

 Spinifera, 2:!. 24, 42. 

 Spirilla, 26, 52. 



Stages of Growth and Decline, 14. 

 Stephani, 115. 

 Steinheim, 20, 30. 

 Steinmann, 86. 

 Stellaris Bed, 105, 109. 

 Stephanoceras bullatum, 32. 



coronatum, 23. 



Gervilli, 32. 



microstomum, 32. 



nodosum. 23. 



platystomum, 32. 



refractum, 32, 47. 

 Stephanoceras, Genetic Relations of, 32. 

 Stephanoceratidse, 23. 

 Stonehouse, 215. 

 Street, 92. 



Striaries Bed, 105, 203. 

 Struggle for Existence, 27, 38, 50, 53. 

 St. Thibault, 132, 135, 142. 144, 212. 213. 

 Stur, 89, li)9. 



Stuttgardt, 132, 156, 158, 176, 182. 

 Suabia, 87, 89, 90, 118, 167, 180. 

 Subclymenia, 25, 26, 80. 

 Subnodosus, 188. 



Suess, 00, 93, 95, 96. 97, 100, 109, 115. 

 Surroundings, action of, x, 52 note, 53. 

 Sutures, origin of digitations of, 50. 



degeneration of, 57. 



persistence in degeneration, 83. 

 Sweden, 88, 115. 

 Swedish Basin, 88. 

 Swiss Alps, 114. 

 Switzerla.nl. 87, 00. 03, 111. 

 Szeklerland, 05. 110. 



Taenia, 15. 17. 



Taramelli, 115. 



Tate, 93, 117, 123. 



Temperate Ilomozoic Band, 87. 



Tentaculites, 10. 



Tertiary Radicals, 19, 22, 23, 107. 



Terqueum, 91, 94, 103, 117, 12:'.. 



Teuchsloch, 203. 



Teutobern-er Wald, 97, 98, 101. 



