5ST 
GENERAL  INDEX. 
[Xov.  1893, 
Arran,  composite  dykes  in,  586. 
Arthrophycus,  from  the  Gold  Coast, 
Proc.  146. 
Ascherhiibel  (Saxony)  basalt,  re-fusion 
of  quartz-felsite  fragments  by,  177. 
Ashes,  volcanic,  in  Lake  District,  359 
et  seqq. 
Ashley  Hill  (Berks),  gravels  on,  314. 
Astarte-bed  (Inf.  Oolite),  487  et  seqq. 
Astroccenia,  affinities  of,  569  ;  A.  de- 
caphylla,  572  ;  A  pulchella,  569  ; 
A.  ramosa,  572  ;  A.  reticulata,  572  ; 
A.  tourtiensis,  571 ;  A.  tuberculata, 
572  ;  A.  gibbosa,  renamed  Stelidio- 
serisg.,  577- 
Astrophacus,  sp.  a,  b,  223. 
Augite;  replacement  of,  by  hornblende, 
94  et  seqq. 
Augite-andesite  dykes  in  British  Isles, 
540  ;  in  Arran,  543  et  seqq. ;  asso¬ 
ciation  with  pitchstones,  501. 
Augite-porphyry  in  S.  Tyrol,  3, 22,  61. 
Aulacothyris,  489  et  seqq. 
Avicula  contorta-zone,  4. 
Aylesbury,  Dinosaurian  teeth  from, 
506. 
Bacton  (Norfolk),  Proc.  146. 
Badmeister  Kofi  (South  Tyrol),  sec¬ 
tion,  34. 
Bagsbot  Sands,  (Pres,  addr.),  Proc.  100. 
Bajocian  of  Sherborne  District,  479; 
correlation  with  adjacent  districts, 
507  ;  with  foreign  areas,  514. 
Bala,  Middle,  in  Ayrshire,  ostracoda 
from,  296  ;  Bala  rocks  in  Berwyn 
Hills,  129  et  seqq.,  436. 
Balance-sheet  for  1892,  Proc.  30-3 t. 
Banded  Slates  in  Caernarvonshire,  448 
et  seqq. 
Banding  of  Malvern  gneisses,  origin 
of,  414. 
Bangor  Breccia  and  Conglomerate, 
460. 
Barbados,  geology  of  (Pres,  addr.), 
Proc.  loz. 
Bardsey  Island  (North  Wales),  160. 
Bargany  Pond  Burn  (Ayrshire),  296, 
302,  304. 
Barlow- Jameson  fund,  recipients,  Proc. 
27- 
Bar  r  on,  T.,  545. 
Barrow,  Geo.,  on  Intrusion  of  Mus- 
eovite-biotite  Gneiss  in  Scottish 
S.E.  Highlands,  330. 
Barton  Series  (Pres,  addr.),  Proc.  98 
et  seqq. 
Basalt-pebble  in  Hartford  gravel,  317. 
Basement  Boulder  Clay.  Proc.  89. 
B  isic  rocks  near  Shap  Granite,  meta¬ 
morphism  of,  360. 
Bassenfells  (Bassenthwaite),  531, 
Bassenthwaite,  diabase  etc.  near,  531. 
Beaches,  raised,  in  Jersey,  523. 
Beaumont  (Jersey),  527. 
Becher,  H.  M.,  gold  quartz  deposits  of 
Pahang  (Malay  Peninsula),  84. 
Beltana  (South  Australia),  Archteo- 
cyathinae  from,  Proc.  8. 
Ben  Reid  (Forfarshire),  348. 
Ben  Tirran  (do.),  333. 
Berwyn  Hills,  429  et  seqq.-,  section,  431. 
Betcham  (Ivent),  section  from,  to 
Brentwood,  318. 
Bethesda  (North  Wales)  and  Llan- 
llyfni,  felsites  etc.  between,  441. 
Bettws  Garmon  Valley  (North  Wales), 
458. 
Beyrichia  impar,  n.  sp.,  303  ;  B.  Kloe¬ 
deni,  301,  302  ;  B.  Kloedeni,  var. 
infecta  nov.,  301  ;  B.  Kloedeni ,  var. 
scotica  nov.,  302. 
Bigsby  medal,  recipients,  Proc.  27 ; 
award  of,  Proc.  44. 
Bilsby  (Lincolnshire),  476. 
Binn  (Canton  Valais),  99,  100,  105. 
Binnenthal  (do.),  schists,  104. 
Biotite,  formation  of,  in  felspar- 
pyroxene  rock,  103;  secondary  de¬ 
velopment  of.  in  Binnenthal  sclusts, 
104;  secondary  (Malvern).  399; 
conversion  into  muscovite,  399. 
Biotite-hornblende  gneiss,  from  dio- 
rite,  402  ;  biotite-gneiss  and  granite, 
from  diorite,  412,  416 ;  banded 
biotite-gneiss,  413,416;  muscovite- 
biotite  gneiss  in  N.E.  Forfar,  330. 
Bisham  (Berks),  gravels  near,  312. 
Bituminous  coal-beds,  formation  of, 
Proc.  11. 
‘  Black-leaded  ’  cyanite,  339. 
Blake,  J.  F.,  on  Felsites  and  Con¬ 
glomerates  between  Bethesda  and 
Llanllyfni  (North  Wales),  441. 
Blanforcl,  Henry  F.,  obituary  of,  Proc. 
52- 
Blea  Beck  (Westmoreland),  365,  367. 
‘ Blue  Beds’  (Inf.  Oolite),  487. 
Lolodon  incisor,  281,  282. 
Bonhard  Corrie  (Forfarshire),  347. 
Bonney,  T.  G.,  533  ;  Note  on  the  Nu- 
fenenstock  (Lepontine  Alps),  89 ; 
Schistose  ‘Greenstones’  and  allied 
Hornblendic  Schists  from  Pennine 
Alps,  illustrating  effects  of  Pressure- 
metamorphism,  94  ;  Secondary  De¬ 
velopment  of  Biotite  and  Horn¬ 
blende  in  Binnenthal  Schists,  104. 
Bontliorpe  (Lincolnshire),  section 
from,  to  Skendleby  Lodge,  475. 
Bonwm-uchaf  (North  Wales),  434. 
‘  Bored  Bed  ’  (Inf.  Oolite),  512. 
