Vol.  49.] 
ADDITIONS  TO  THE  LIBEAKY. 
177 
lachian  Virginia,  10. — F.  Leverett.  On  the  Significance  of  the  White 
Clays  of  the  Ohio  Region,  18. — R.  S.  Tan\  The  Relation  of  Secular  Decay 
of  Rocks  to  the  Formation  of  Sediments,  25. — W.  H.  Hobbs.  Notes  on 
some  Pseud omorphs  from  the  Taconic  Region,  44. — G.  P.  Merrill.  On 
some  Basic  Eruptive  Rocks  in  the  Vicinity  of  Lewiston  and  Auburn, 
Androscoggin  Co.,  Maine,  49. — C.  Rominger.  On  the  Occurrence  of 
Typical  Chcetetes  in  the  Devonian  Strata  at  the  Falls  of  the  Ohio,  and 
likewise  in  the  Analogous  Beds  of  the  Eifel,  in  Germany,  56. — N.  IT. 
Winch  ell.  An  Approximate  Interglacial  Chronometer,  69. — H.  P.  Bru- 
mell.  Notes  on  Manganese  in  Canada,  80. — C.  S.  Beachler.  Keokuk 
Group  of  the  Mississippi  Valley,  88.— E.  O.  Ulrich.  New  Lamelli- 
branchiata,  96. — R.  T.  Hill.  The  Geologic  Evolution  of  the  Non- 
Mountainous  Topography  of  the  Texas  Region,  105. — J.  Crawford.  Notes 
on  Earthquakes  in  Nicaragua,  115. — C.  Wachsmutk  and  F.  Springer. 
Description  of  two  new  Genera  and  eight  Species  of  Camerate  Crinoids 
from  the  Niagara  Group,  185. — S.  Calvin.  Notes  on  a  Collection  of 
Fossils  from  the  Lower  Magnesian  Limestone  from  North-eastern  Iowa, 
144. — H.  S.  Williams.  The  Scope  of  Palaeontology  and  its  Value  to 
Geologists,  148. — N.  H.  Winchell.  Some  Problems  of  the  Mesabi  Iron 
Ore,  169. — E.  W.  Claypole.  The  Head  of  Dinichthys,  199. — A.  A. 
Wright.  Extra-Morainic  Drift  in  New  Jersey,  207. — Pleistocene  Papers 
read  at  the  late  Geological  Meetings  at  Rochester,  217. — C.  Lapworth. 
Address  before  the  Geological  Section  of  the  British  Association  for  the 
Advancement  of  Science,  Edinburgh,  225. — E.  0.  Ulrich.  New  Lower 
Silurian  Ostracoda,  263. — E.  0.  Ulrich.  Two  new  Lower  Silurian  Species 
of  Lichas  (subgenus  Hoplolichas) ,  271. — C.  R.  Keyes.  The  Platvceras 
Group  of  Palaeozoic  Gasteropods,  273. — H.  V.  Winchell.  Classification 
of  the  Theories  of  the  Origin  of  Iron  Ores,  277. — A.  Rothpletz.  On  the 
Formation  of  Oolite,  279.— Marquis  de  Nadaillac.  New  Discoveries  at 
Baousse  Rousse,  near  Mentone,  296.— J.  E.  Todd.  The  Shore-Lines  of 
Ancient  Glacier  Lakes,  298. — D.  P.  Penhallow.  A  Preliminary  Exami¬ 
nation  of  so-called  Cannel  Coal  from  the  Kootanie  of  British  Columbia, 
331. — W.  Upham.  Conditions  of  Accumulation  of  Drumlins,  339. — 
A.  Keith.  The  Geologic  Structure  of  the  Blue  Ridge  in  Maryland  and 
Virginia,  362. — J.  Marcou.  On  the  Classification  of  the  Dyas,  Trias,  and 
Jura  in  North-west  Texas,  369.— W.  J.  McGee.  The  Areal  Work  of  the 
United  States  Geological  Survey,  377. — C.  R.  Keyes.  The  Present 
Basal  Line  of  Delimitation  of  the  Carboniferous  in  North-eastern  Mis¬ 
souri,  380. 
Minneapolis.  American  Geologist.  Vol.  xi.  Nos.  1-5.  1893. 
R.  D.  Salisbury.  Man  and  the  Glacial  Period,  13. — N.  H.  Winchell. 
Frondescent  Haematite,  20. — Baron  Gerard  De  Geer.  On  Pleistocene 
Changes  of  Level  in  Eastern  North  America,  22. — Harold  W.  Fairbanks. 
Notes  on  a  further  study  of  the  California  Coast-ranges,  69. — C.  H. 
Smyth,  Jr.  Lake-filling  in  the  Adirondack  Region,  85. — F.  L.  Nason. 
The  Magnesian  Series  of  the  Ozark  Uplift,  91. — J.  Marcou.  Second 
Supplement  to  Mapoteca  Geologica  Americana,  1752-1881,  95. — A.  W. 
V  ogdes.  On  the  Genus  Ampyx ,  with  descriptions  of  American  Species, 
99. — 0.  Schuchert.  A  Classification  of  the  Brachiopoda,  141. — E.  W. 
Claypole.  A  new  Coccostean  ( Coccosteus  Cuyahogce ),  167. — Pleistocene 
Papers  read  at  the  Ottawa  Meeting  of  the  Geological  Society  of  America, 
171. — N.  S.  Slialer.  Antiquity  of  Man  in  Eastern  North  America,  180. 
— A.  A.  Wright.  Older  Drift  in  the  Delaware  Valley,  184. — F.  Leverett. 
Supposed  Glacial  Man  in  South-western  Ohio,  186. — W.  Upham.  Man 
and  the  Glacial  Period,  189. — E.  W.  Claypole.  Pre- Glacial  Man  not 
Improbable,  191. — -N.  H.  Winchell.  Professor  Wright’s  Book  a  Service 
