xl INTRODUCTION. 
K. Forbes, J. S. Gardner, J. G. Goodchild, J. W. Gregory, 
T. T. Groom, A. C. L. G. Giinther, J. Haime, H. Hicks 
G. J. Hinde, J. Hopkinson, W. H. Hudleston, T. H. Huxley, 
H. Jelly, T. R. Jones, A. J. Jukes-Browne, W. Keeping, 
J. W. Kirkby, W. Kowalevsky, P. Lake, E. R. Lankester, 
C. Lapworth, J. Leckenby, W. Lonsdale, P. de Loriol, J. Lycett, 
R. Lydekker, J. E. Marr, F. McCoy, L. C. Miall, J. Morris, 
R. I. Murchison, E. T. Newton, R. Owen, J. Parkinson, A. 
Pavlow, J. Phillips, J. Postlethwaite, T. Roberts, J. W. Salter, 
R. Schafer, H. G. Seeley, A. C. Seward, G. W. Shrubsole, 
W. J. Sollas, J. Sowerby, J. de C. Sowerby, R. H. Traquair, 
A. Wanklyn, G. F. Whidborne, 8S. V. Wood, A. 8. Woodward, 
H. Woodward, 8. P. Woodward, T. Wright, J. Young. 
In the preparation of the Vertebrate portion I have derived 
very considerable help from the excellent ‘Catalogue of British 
Fossil Vertebrata’ by Messrs. A. 8. Woodward and C. D. 
Sherborn. 
I have much pleasure in expressing my thanks to several 
gentlemen for the assistance they have very generously given 
me. I would especially mention Mr A. C. Seward who has 
revised the Plants, Dr G. J. Hinde the Incertz sedis and 
Porifera, Mr J. E. Marr the Hydrozoa and Trilobita, Professor 
H. A. Nicholson the Actinozoa, Mr J. W. Gregory the Echi- 
noidea, Asteroidea, and Blastoidea, Mr F. A. Bather the Cri- 
noidea and Cystidea, Mr G. R. Vine the Polyzoa, Mr J. F. 
Walker the Brachiopoda, Professor T, Rupert Jones the Ostra- 
coda and Phyllocarida, Mr J. Carter the Decapoda, Mr A. H. 
Foord the Cephalopoda, and Mr A. 8. Woodward the Vertebrata. 
I am also indebted to Mr T. Roberts and Mr J. W. Gregory for 
much general assistance and advice. 
H. WOODS. 
November, 1891. 
