﻿GENEEAL 
  INDEX, 
  

  

  679 
  

  

  M 
  Toarcien," 
  460. 
  

  

  Tonalite-gneiss 
  of 
  Madagascar, 
  341. 
  

  

  Torbay, 
  volcanic 
  rocks 
  of, 
  374. 
  

  

  Totnes, 
  Ashprington 
  volcanic 
  series 
  

   near, 
  372. 
  

  

  Trachytes 
  of 
  Madagascar, 
  354. 
  

  

  Trap-granulite 
  of 
  Madagascar, 
  344. 
  

  

  Tricbites 
  in 
  brown 
  glass 
  of 
  basalts 
  

   from 
  Madagascar, 
  354. 
  

  

  Tricbospongia, 
  145. 
  

  

  Trigonocrimcs 
  liratus, 
  161. 
  

  

  Trocbocyathus 
  conulus, 
  616. 
  

  

  Trocbus 
  pulcherrimus, 
  615. 
  

  

  Tubulipora 
  spatiosa, 
  567. 
  

  

  Tuff, 
  block 
  of, 
  sbowing 
  included 
  slate- 
  

   fragments, 
  from 
  Tyrau 
  Mawr, 
  428 
  ; 
  

   compressed, 
  containing 
  fragments 
  

   of 
  vesicular 
  and 
  perlitic 
  lavas, 
  from 
  

   Craig-y-Llam, 
  430. 
  

  

  , 
  with 
  felspar-crystals 
  and 
  frag- 
  

   ments 
  of 
  slate 
  and 
  vesicular-glass, 
  

   from 
  Tyrau 
  Mawr, 
  428. 
  

  

  Tuffs 
  and 
  sedimentary 
  deposits 
  of 
  

   Cader 
  Idris, 
  423, 
  

  

  and 
  lavas 
  of 
  the 
  Western 
  Isles, 
  

  

  subaerial 
  origin 
  of 
  the, 
  195. 
  

  

  Turin, 
  traverse 
  from 
  Brianqon 
  to, 
  

   79. 
  

  

  Tyrau 
  Mawr, 
  tuff 
  with 
  felspar- 
  crystals 
  

   and 
  fragments 
  of 
  slate 
  and 
  vesicular 
  

   glass 
  from, 
  428 
  ; 
  block 
  of 
  tuff 
  

   showing 
  included 
  slate 
  -fragments, 
  

   from, 
  428. 
  

  

  United 
  States, 
  Western 
  Territories 
  of 
  

   the, 
  mode 
  of 
  formation 
  of 
  the 
  lava- 
  

   fields 
  of 
  the, 
  212. 
  

  

  Upton, 
  microscopic 
  characters 
  of 
  

   Lower 
  Cbalk 
  from 
  near, 
  408. 
  

  

  Val 
  Cbisone, 
  microscopic 
  structure 
  of 
  

  

  the 
  gneisses 
  of 
  the 
  lower 
  part 
  of 
  

  

  the, 
  103. 
  

   Veined 
  complexes, 
  schistosity 
  in, 
  at 
  

  

  shear-zones, 
  478. 
  

   Velber-Tauern 
  district, 
  microscopic 
  

  

  structure 
  of 
  the 
  "Central 
  Gneiss" 
  

  

  of 
  the, 
  104. 
  

  

  of 
  the, 
  90. 
  

  

  Veneon, 
  valley 
  of 
  the, 
  72, 
  74. 
  

  

  Victoria 
  Park, 
  Whiteinch, 
  near 
  Glas- 
  

   gow, 
  Mr. 
  F. 
  Rutley 
  on 
  tacbylyte 
  

   from, 
  626. 
  

  

  Vizille, 
  microscopic 
  structure 
  of 
  mica- 
  

   schist 
  from, 
  100. 
  

  

  , 
  traverse 
  from, 
  to 
  Bourg 
  d'Ois- 
  

  

  ans, 
  71. 
  

  

  Volcanic 
  ash 
  in 
  Permian 
  breccias 
  of 
  

   Leicestershire, 
  24, 
  26. 
  

  

  rocks 
  of 
  Madagascar, 
  345. 
  

  

  Q. 
  J. 
  G. 
  S. 
  No. 
  180. 
  

  

  Volcanic 
  series 
  of 
  Madagascar, 
  older, 
  

   313 
  ; 
  newer, 
  315. 
  

  

  and 
  Plutonic 
  rocks 
  of 
  the 
  West- 
  

   ern 
  Isles 
  of 
  Scotland, 
  relations 
  

   between 
  the, 
  191 
  ; 
  Tertiary 
  age 
  of 
  

   the, 
  195. 
  

  

  rock, 
  stratified, 
  in 
  Permian 
  

  

  breccias 
  of 
  Leicestershire, 
  25. 
  

  

  rocks 
  of 
  Dartmoor, 
  Mr. 
  R. 
  N. 
  

  

  Worth 
  on 
  the, 
  398. 
  

  

  series, 
  Ashprington, 
  of 
  South 
  

  

  Devon, 
  (the 
  late) 
  Mr. 
  A. 
  Champer- 
  

   nowne 
  on 
  the, 
  369. 
  

  

  Volcanoes, 
  existence 
  in 
  the 
  Western 
  

   Isles 
  of 
  great, 
  which 
  have 
  been 
  

   dissected 
  by 
  denudation, 
  201. 
  

  

  ■ 
  , 
  Tertiary, 
  of 
  the 
  Western 
  Isles 
  

  

  of 
  Scotland, 
  Prof. 
  J. 
  W. 
  Judd 
  on 
  

   the, 
  187. 
  

  

  Walford, 
  Mr. 
  E. 
  A., 
  on 
  some 
  Bryozoa 
  

   from 
  the 
  Inferior 
  Oolite 
  of 
  Shipton 
  

   Gorge, 
  Dorset, 
  561. 
  

  

  Water, 
  action 
  of, 
  upon 
  hornblende- 
  

   schists 
  of 
  the 
  Lizard, 
  525-531. 
  

  

  , 
  action 
  of, 
  when 
  pure 
  and 
  when 
  

  

  saturated 
  with 
  carbonic-acid 
  gas, 
  on 
  

   the 
  minerals 
  of 
  the 
  mica-family, 
  363. 
  

  

  Wealden, 
  plastron 
  of 
  a 
  Ohelonian 
  from 
  

   the, 
  511. 
  

  

  , 
  Theropodous 
  Dinosaur 
  from 
  

  

  the, 
  44. 
  

  

  and 
  Purbeck, 
  Mr. 
  E. 
  Lydekker 
  

  

  on 
  Ohelonian 
  remains 
  from 
  the, 
  511. 
  

  

  "Weisser 
  Jura" 
  of 
  Bavaria, 
  Mr. 
  F. 
  

   A. 
  Bather 
  on 
  Trigonocrinus, 
  a 
  new 
  

   genus 
  of 
  Crinoidea 
  from 
  the, 
  149. 
  

  

  West 
  Malvern, 
  shear-zone 
  above, 
  

   section 
  of, 
  478. 
  

  

  Western 
  Alps, 
  crystalline 
  rocks 
  of 
  the, 
  

   69. 
  

  

  . 
  microscopic 
  structures 
  in 
  

  

  crystalline 
  rocks 
  of 
  the, 
  100. 
  

  

  Isles 
  of 
  Scotland, 
  Prof. 
  J. 
  W. 
  

  

  Judd 
  on 
  the 
  Tertiary 
  Volcanoes 
  of 
  

   the, 
  187. 
  

  

  Whitaker, 
  Mr. 
  W., 
  on 
  the 
  results 
  of 
  

   the 
  Streatham 
  boring, 
  Proc. 
  z, 
  4. 
  

  

  Whiteinch, 
  near 
  Glasgow, 
  tacbylyte 
  

   from, 
  626. 
  

  

  White 
  Lackington 
  Park, 
  near 
  Ilmin- 
  

   ster, 
  section 
  at, 
  450. 
  

  

  White 
  Whin 
  vein, 
  Victoria 
  Park, 
  

   Whiteinch. 
  analysis 
  of, 
  631. 
  

  

  Willett, 
  Mr. 
  H., 
  and 
  Mr. 
  R.Etheridge, 
  

   on 
  the 
  dentition 
  of 
  Lepidotus 
  max- 
  

   imus, 
  Wagner, 
  as 
  illustrated 
  by 
  

   specimens 
  of 
  the 
  Kimeridge 
  Clay 
  

   of 
  Shotover 
  Hill, 
  near 
  Oxford, 
  

   356. 
  

  

  3d 
  

  

  