262 



INDEX. 









PAGE 



PAGE 



Eeniera Zitteli 144 ; 



IX, viii, viii a-viii c 



Shepton Mallet 189,209 



Renulina Sorbyana ... 







... 211 



Shipton Gorge 191, 192, 199, 216, 218, 231, 238, 



Eetispongia ... 







... 195 



241, 242 



Reuss, A. E. ... 







... 9, 18 



Silica in Sponges, Amorphous ... ... 55 



Rhabdocoelia ... 







... 200 



Cryptocrystalline ... 55 



Rhabdociiemis 







... 198 



Crystalline ... 55 



Rhaphidhistia 







... 146 



Nature of 54 



Rhaxella 







... 210 



Siliceous Skeletons dissolved ... ... 57 



perforata 192, 210 ; 



XIII 



, vii, 



vii a-viif 



replaced by Calcite and 



Rhaxellidse, Family ... 







... 210 



Glaueonite 58 



Rhizomorina, Family 





87, 



154, 203 



— by Iron Perox- 



Spicules 







... 69 



ide and Iron 



Richmond (Surrey) ... 191 



218 



, 240, 



241, 247 



Pyrites ... 59 



(Yorkshire) 100, 



143, 



144, 



150, 152, 

 160, 162 



Sponges in Flint and Chert ... 60 

 Silicispougife ... ... ... ... 86 



Roemer, Ferd. 11, 15, 19, 33, 38, 



113- 



115, 118, 



Silurian System, Sponges in 97, 110, 116, 122, 



119, 121 



, 126 



, 133, 



135, 136 



123-134 



Roemer, F. A. 7, 



8, 16 



, 198, 



200, 243 



Siuzow, J. ... ... ... ... 32 



Rose, C. B. ... 







6 



Siphonia ... 112,207 



Rosen, Baron v. 







... 18 



lycoperdioides ... ... ... 220 



Rutot, A 







... 23 



Siphonocoelia ... ... ... ... 218 



Skeletal Structures of Fossil Sponges 64-84 



Salter, J. W. 16, 17, 22, 106, 



119, 



120, 



122, 126, 



Smith, John (Kilwinning) 101, 135, 141, 145, 150, 



130, 138 



179 



, 180, 



182, 184 



170, 171, 174, 175 



Scarborough ... 





192, 



212, 227 



J. Toulmin 10 



Scheuchzer, J. J. 







3 



— William 5 



Schlotheim, E. F. v ... 







5 



Solenolmia ... ... ... ... ... 241 



Sehliiter, C. A. 







22,41 



Sollas, Prof. W. J. 22, 25, 27, 29, 31, 33, 34, 37, 



Schroeter, J. S. 







4 



39, 42, 197, 199, 200, 201, 



Schulze, F. E. 







... 147 



204, 207, 213, 215, 231, 233, 



Schweigger, A. F. 







5 



238 



Scyphia 195 



198 



, 200, 



202, 218 



Sorby, Dr. H. C. ... 211 



— Bronnii 







216, 219 



Southerndown ... ... ... ... 209 



— caesposa 







... 219 



Sowerby, J. de C 7 



clathrata 







.. 198 



Species bad and doubtful ... ... 176-184 



cylindrica 







... 223 



Species in Great Oolite, List of ... ... 253 



pistilliformis 







... 213 



Sphserolites ... ... ... ... 115 



— tuberculata ... 







... 181 



Nicholsoni ... ... ... 116 



— turbinata 







... 182 



Sphecidion ... ... ... ... ... 240 



Selenoides 







... 119 



Sphaeronites tessellatus ... ... ... 136 



Iowensis ... 







... 120 



Sphserospongia 97,119,135 



Serpula 







109, 110 



hospitalis ... ... ... 182 



parallela 







... 161 



tessellata 136, 182 ; IV, ii, ii«- 



— socialis 







... 161 



nd 



Settrington 





212 



224, 229 



Spicular Structures, modifications arising 



Sharpe, D. 







... 13 



from ... ... ... ... 63-64 



Shelve 







... 112 



Spiractinella 96,99,164 



