262 
PAGE 
Reniera Zitteli 144; IX, viii, viii a—vilie 
Renulina Sorbyana 211 
Retispongia 195 
Reuss, A. E. ; >, 1s 
Rhabdoceelia , , 200 
Rhabdoenemis 198 
Rhaphidhistia 146 | 
Rhaxella 210 
-- perforata 192, 210; XIII, vii, viia—vnf 
Rhaxellidee, Family . 
Rhizomorina, Family 
Spicules be , 
Richmond (Surrey) ... 191, 218, 240, 241, 247 
= (Yorkshire) 100, 148, 144, 150, 152, 
160, 162 
Roemer, Ferd. 11, 15, 19, 38, 38, 113-115, 118, 
119, Hel, 126, 1383, 135, 1386 
Roemer, F. A. , 8, 16, 198, 200, 243 
Rose, C. B. : 6 
Rosen, Baron v. : 18 
Rutot, A. 23 
Salter, J. W. 16, 17, 22, 106, 119, 120, 122, 126, 
130, 138, 179, 180, 182, 184 
Scarborough 192, 212, 227 
Scheuchzer, J. J. 4: 3 
Schlotheim, E. F. v 5 
Schliter, C. A. 22, 41 
Schroeter, J. 8. ; 4 
Schulze, F. E. 5 key 
Schweigger, A. F. Fr af, a 5 
Seyphia 195, 198, 200, 202, 218 | 
—  Bronniu Ae : 216, 219 
— — cxesposa Ee 219 
——  elathrata : 198 | 
—  eylindrica 22% 
pistilliformis 213 
tuberculata s 181 
-——  turbinata . 182 
Selenoides , Wig) 
Towensis ... a3 eee) 
Serpula 109, 110 
—  parallela 161 
—  socialis : Selon 
Settrington ... 212, 224, 229 
Sharpe, D. ie ee eels 
Shelve 112 
210 
87, 154, 203 
| Skeletal Structures of meee sponses 
| Smith, John (Kilwinning) 101, 135, 141, 145, 150, 
| Sollas, Prof. W. J. 
INDEX. 
PAGE 
189, 209 
218, 231, 238, 
241, 242 
Shepton Mallet a 
Shipton Gorge 191, 192, 199, 216 
Silica in Sponges, Amorphous ats Seo) 
= ~- Cryptocrystalline 6 3) 
—- ~- Crystalline Bat a5) 
-- — Nature of , Peco 
Siliceous Skeletons dissolved ay 57 
a= replaced by Calcite a 
Glauconite 58 
— by Iron Perox- 
ide and Iron 
Pyrites  . 59 
— Sponges in Flint and Chert 60 
Silicispongie ... — : ; 86 
Silurian System, Sponges in 7 TOs W622 e 
123-134 
Sinzow, J. : é 2 82, 
Siphonia : ; 112, 207 
— lycoperdioides ; . 220 
Siphonoceelhia 218 
64-84 
170, 171, 174, 175 
—= J, Wkowilheuim =. 5 iF oe 10 
— William F : oe 5 
Solenolmia afer aie . 5 QAI 
22, 25, 27, 29, 31, 33, 34, 37, 
39, 42, 197, 199, 200, 201, 
204, 207, 218, 215, 231, 233, 
238 
Sorby, Dr. H.C. . “ae ap eoilil 
Southerndown Sep a 209 
Sowerby, J.deC. ... : : 7 
Species bad and doubtful 176-184 
| Species in Great Oolite, List of 253 
Spheerolites ae 115 
Nicholsoni 116 
Sphecidion ... 240 
Spheronites tcagellatne fe! ee ll SG; 
Spherospongia 97, LOTS 
— hospitalis *, lope tte 
- tessellata 1386, 182; IV, ii, iia— 
id 
Spicular Structures, modifications arising 
from 638-64 
Spiractinella .. 96, 99, 164 
