Wiuchell.] ^^^ [May 6, 1870. 



1864. Hall: xvi. Kep. N. Y. Regents, pp. 92, 107, Note. 



" Wiuchell: The Oil Region of Michigan (Repnb. Amer. Joiir. Sci., 

 May, 1865, xxxix., 350). 



1865. Winchell: Proc. Phil. Acad. Sci., July, 109. 



" Meek: Proc. Acad. Nat. Sci., Phil., Dec, 275. 

 " Meek and Worthen: lb., 245. 



1866. Winchell: Amer. Jour. Sci., xli., 177 (March). 

 •' Winchell: The Grand Traverse Region, p. 49. 

 " JSTewberry: Prospectus Nefif Petroleum Co. 



•' Winchell: Prospectus Neif Petroleum Co., p. 7 rjune). 



" Meek and Worthen: Proc. Acad. Nat. Sci , Phil., 251. 



" Worthen: Rep. Geol. Surv. 111., I., 108. 



" Meek and Worthen: lb., II., 62, 77, 80, 145. 



" Hall: Proc. Amer. Phil. Soc, 246 (in advance of Pal. N. Y.,vol.iv). 



" Logan: Atlas to accompany Geology of Canada, 1863. 



1867. Davidson (Thos.): Geological Magazine; vol. iv., July. 



" Carpenter (W. B.): Annals and Magazine of Natural History, July. 



" Meek: Amer. Jour. Sci. [2] xliii., 407. 



" Hall: Notice of Volume IV., Paleontology of New York. 



1868. Hall: xx. Report N.Y. Regents, p. 295, pi. ix., fig. 10. 



" Winchell: Proc. Amer. Assoc, Abstract in Chicago papers, Aug.l2, 



and "American Naturalist," Oct., p. 445. 

 " Meek and Worthen: Geol. Survey of Illinois, vol. III., p. 450 ; and 



also the Geology of the Counties. 



1869. Safford: Geology of Tennessee, pp. 341, 439. 



" AYinchell: In Geol. of Tenn., pp. 364-5, 442-6. 

 " Winchell: Proc. Amer. Phil. Soc, xi., pp. 57-83. 

 " Newberry: Proc. Amer. Assoc Salem Meeting, Relations of Ohio 

 Geology to that of adjoining States. 



1870. Hall: Preliminary Notice, &g., Preparatory for Paljentology of New 



York (received Jan). 

 " Wiuchell: Proc. Amer. Phil. Soc, xii., pp. 245-261 (read Jan. 



4th). 

 " Newberry: Geological Survey of Ohio, its Progress in 1869. An 

 Address before the Legislature (received 15 April). 



ERRATA 



IN PART I. OF THIS PAPER. 



Page 57. Contents, V. for "analogies," read "analogues." 



57. " ix., for "Their names," read "The Name." 

 64. Sixth line from top, for "Crr/rocej-as," read " Gyroceras." 

 66. Tenth line from top, for "Hudson," read "Huron." 

 69. Note "70," line 3, for "authority," read "authorities." 

 72. Seventh line from top, for "correction," read "conviction." 

 72. Note "83," line 3. for "he previously," read "he had previously." 

 78. Note "104," line 2, for " geological," read " geographical." 

 80. Note "108," line 3, for "announcement," read "announcements." 

 82. Twenty-seventh line from top, for " phenomenon," read "phenomena.' 

 PcA'Cral minor errors will, perhaps, l>e apparent to the reader. 



