(1) ‘Geology of Oxford and the Thames Valley.’  Phillips.
 (2) ‘Geology of Yorkshire,’ vol. ii.  Phillips.
 (3) ‘Memoirs of the Geological Survey of Great Britain.’
 (4) ‘Geology of Cheltenham.’  Murchison, 2d ed.  Buckman.
 (5) ‘Introduction to the Monograph of the Oolitic Asteriadae’
     (Palaeontographical Society).  Wright.
 (6) “Zone of Avicula contorta and the Lower Lias of the South of
     England”—­’Quart.  Journ.  Geol.  Soc.,’ vol. xvi., 1860.  Wright.
 (7) “Oolites of Northamptonshire”—­’Quart.  Journ.  Geol.  Soc.,’
     vols.  Xxvi. and xxix.  Sharp.
 (8) ‘Manual of Geology.’  Dana.
 (9) ‘Der Jura.’  Quenstedt.
(10) ‘Das Floetzgebirge Wuerttembergs.’  Quenstedt.
(11) ‘Jura Formation.’  Oppel.
(12) ‘Paleontologie du Departement de la Moselle.’  Terquem. (13) ‘Cours elementaire de Paleontologie.’  D’Orbigny. (14) ‘Paleontologie Francaise.’  D’Orbigny.
(15) ‘Fossil Echinodermata of the Oolitic Formation’
     (Palaeontographical Society).  Wright.
(16) ‘Brachiopoda of the Oolitic Formation’ (Palaeontographical
     Society).  Davidson.
(17) ‘Mollusca of the Great Oolite’ (Palaeontographical Society). 
     Morris and Lycett.
(18) ‘Monograph of the Fossil Trigoniae’ (Palaeontographical Society). 
     Lycett.
(19) ‘Corals of the Oolitic Formation’ (Palaeontographical Society). 
     Edwards and Haime.
(20) ‘Supplement to the Corals of the Oolitic Formation’
     (Palaeontographical Society).  Martin Duncan.
(21) ‘Monograph of the Belemnitidae’ (Palaeontographical Society). 
     Phillips.
(22) ‘Structure of the Belemnitidae’ (Mem.  Geol.  Survey).  Huxley. (23) ‘Sur les Belemnites.’  Blainville. (24) ‘Cephalopoden.’  Quenstedt.
(25) ‘Mineral Conchology.’  Sowerby.
(26) ‘Jurassic Cephalopoda’ (Palaeontologica Indica).  Waagen. (27) ‘Manual of the Mollusca.’  Woodward. (28) ‘Petrefaktenkunde.’  Schlotheim.
(29) ‘Bridgewater Treatise.’  Buckland.
(30) ‘Versteinerungen des Oolithengebirges.’  Roemer.
(31) ‘Catalogue of British Fossils.’  Morris.
(32) ‘Catalogue of Fossils in the Museum of Practical Geology.’ 
     Etheridge.
(33) ‘Beitraege zur Petrefaktenkunde.’  Muenster.
(34) ‘Petrefacta Germaniae.’  Goldfuss.
(35) ‘Lethaea Rossica.’  Eichwald.
(36) ‘Fossil Fishes’ (Decades of the Geol.  Survey).  Sir Philip Egerton. (37) ‘Manual of Palaeontology.’  Owen. (38) ‘British Fossil Mammals and Birds.’  Owen.
(39) ‘Monographs of the Fossil Reptiles of the Oolitic Formation’
     (Palaeontographical Society).  Owen.
(40) ‘Fossil Mammals of the Mesozoic Formations’ (Palaeontographical
     Society).  Owen.
(41) ‘Catalogue of Ornithosauria.’  Seeley.
(42) “Classification of the Deinosauria”—­’Quart.  Journ.  Geol.  Soc.,’
     vol. xxvi., 1870.  Huxley.

CHAPTER XVII.

THE CRETACEOUS PERIOD.