vi TEXT-BOOK OF PALAEONTOLOGY 
preface, and also in footnotes at the end of the several chapters. Their 
names are enumerated below in the order of their respective sections, and the 
Editor begs to express at this time a sense of his profound appreciation of the 
services that have been so generously rendered. For the many personal 
courtesies extended, he would return to each of them his sincere and hearty 
thanks. 
LIST OF COLLABORATORS 
Mr. CHarLes Wacusmouta, Crinoidea, Blastoidea. 
Mr. W. Percy SLapEN, Asterozoa, Echinozoa. 
Dr. GreorGE JENNINGS HinpE, Vermes. 
Mr. Epwarp O. Utricn, Bryozoa, Ostracoda. 
Mr. CHARLES ScuucHERt?, Brachiopoda. 
Dr. Wini1am H. Dati, Pelecypoda. 
Prof. Henry A. Piuspry, Gastropoda. 
Prof. AnpHEusS Hyarr, Cephalopoda. 
Prof. CHARLES E. BEEcHEr, Trilobita. 
Prof. Joon M. Charke, Eucrustacea (pars), Acerata (pars). 
Prof. Joun 8S. Kinastry, Hucrustacea (pars), Acerata (pars). 
Prof. SamugenL H. Scupper, Insecta. 
The Editor is also greatly indebted to his friend Dr. John C. Merriam, 
who undertook the translation of the entire chapter on J/ollusca, a very 
laborious work. Dr. Merriam’s assistance has been further enlisted in the 
translation of the second volume, which will be devoted exclusively to the 
Vertebrates. Dr. August F. Foerste was kind enough to furnish a transla- 
tion of the chapter on Insects, and various friends have assisted in correcting 
proofs. For the compilation of the index the Editor is indebted to Miss 
Elizabeth B. Bryant, a former student of his at Radcliffe College, and to 
his brother, Mr. David P. Eastman. 
CHARLES R. EASTMAN. 
HARVARD UNIVERSITY, 
September 15, 1899. 
