6 BuivLETIN 4 I20 



stored in the archives of the department of Paleontology of 

 Cornell University. 



It is scarcely necessary to say that during the summer season 

 in the South it is often extremely warm, and trying to one's 

 health; and the writer, as well as the University at large, is 

 deeply indebted to the skill, strength, good-will and never-tiring 

 zeal of Mr. W. S. Hubbard. 



Dr. Jas. M. Safford's collection of types. — In the Journal of 

 the Academy of Natural Sciences, vol. iv, i860, p. 390, et seq., 

 Gabb published descriptions and figures of some fossils which 

 he referred to as borrowed of Dr. Safford, State Geologist of 

 Tennessee, who in turn obtained them from the ' ' Ripley Group' ' 

 of Hardeman Co., Tenn. 



Through the kindness of Dr. Safford, the present writer has 

 had the opportunity of seeing the type collection as sent to Gabb 

 thirty-six years ago. A few are missing, but the privilege of 

 seeing the remainder has been a great boon. They are all re- 

 figured herewith. 



T. H. Aldrich' s collectio7i of fossils and drawings. — No one of 

 late years has paid more attention to our marine Eocene paleon- 

 tology than has Mr. Aldrich. His cheerful and prompt an- 

 swers to inquiries, his transmission of fossils and all of the 

 original drawings used in his article on the Midway fossils of 

 Alabama published in a recent report by the Geological Survey 

 of that State, have all tended to facilitate our present under- 

 taking. 



Collections of the U. S. National Museum. — All of the material 

 collected fen years ago by ly. C. Johnson in Hardeman Co., 

 Tenn., and the interesting material from Oak Hill and Prairie 

 Creek, Ala., have been transmitted by W. H. Dall of the 

 Smithsonian Institution and the U. S. Geological Survey, and 

 have been of great service to the writer. Mr. Stanton, of the 

 Geological Survey, has also sent many fossils for inspection. 



The author'' s works and field notes on this stage in Arkansas 

 and Texas. — The results of the author's work on this terrane in 

 Arkansas, are embodied in vol. ii, of the Ann'l Rep't Geol. 

 State Survey of 1892. The Midway and other Tertiary mollus- 

 can remains of Texas were fully described and figured in a 

 large monograph prepared to accompany the Fifth Annual Re- 

 port of the State Survey; but appropriations failed and the 

 work remains unpublished as a whole; the new species were 

 brought out in 1895 by the Philadelphia Academy of Natural 

 Sciences in the "Proceedings." A few field notes and many 

 paleontological facts are published for the first time in the 

 present work. 



