9, 



15. 



9, 



18. 



9, 



25. 



9, 



33. 



9, 



37. 



10, 



2. 



10, 



6. 



10,. 



19. 



10, 



38. 



11, 



1. 



11, 



2. 



Ill 



8, 32. Agnostus nobilis is referred now to Lower Cambrian, since the 



discoveries of Schmidt in Russia, and Walcott in America. (G. 



F. M.) 

 For L. and Lower, read M. and Middle. (C. D. W.) 

 For Sp. cinciiiiiaticum, Claypole would read ciiicinnatiense. 

 coxana^ and (27) Uevis, names abandoned. (R. D. L.) coxana, 



now owenii. (L. L. ) 

 Read virginiayia. 

 Read Sphenopteris. 

 Sidlivanti is not an Alet^iopteris, but a Callipteris, or Callipteri- 



dium (L. L.) 

 Read virginiana. 

 For 500 read 900. (L C. W.) 

 Add : very abundant over tlie Sliaron coal bed in Summit co., Oliio. 



(E. W. C.) 

 Read lonchitica^ Schlot 



Erase " 1824. Flora der Vorwelt, adders tongue fern" for reasons 

 given in L. Lesquereux's MS. letter of Dec. 27, 1839. 

 11, 3. For 887, read 177. (L. L.) 



11, 21. After "other species" insert "the nervation being obsolete " (L. L.) 



See coal Flora, p. 178, where the species (fig. 2) is considered to 

 be a variety of A. lonchitica ; adding "of which the shape, size, 

 etc." See letter. 



12, 1. After 7iervosa, insert GoQi^\).:^Pseudoj)ecopteris nervosa, Lesq.= 



Diplot/unema nervosum, Stur. =Mariopteris riervosa, Zeiller, 

 &c., Ac. (L. L.) 

 12, 1. Read Brongt. 



12, 4. From " He " to "Abundant " on line 15, erase all ; and also the sen- 

 tence "But, line 19 &c. to species line 21." (L, L. as above.) 

 12, 23. Dr. Lesquereux wishes erased all trom "So called" to "frond," 

 line 37 ; and to insert under CalHpteris rugosa (p. 107 below) his 

 remarks on page 169 of the Coal Flora. 

 Read Brongniart. 

 Read Mr. R. D. Lacoe. 

 Add : See Appendix, where newer and better specimens will be 



figured by Lesquereux. 

 Pteris aquilina, tiie common brake. (J. W. D. ) 



Alethopteris ? Two species of coal measure type, reported by 



L C. White, from the Tipton coal beds in Blair Co., hitherto sup- 

 posed to be Pocono No. X coals (MS. letter, Feb. 27, 1889.) 

 16, index. For A LET, read ALG^E. 

 16, IL For plant seeds, read "seeds of land plants ; and also of fishes and 



molluscs." (L. L. ) 

 16, 16. Antarctic ? 

 16,30. ^Q2id {Caul erjyites^ . 

 16, 32. After 1866, insert: also Coal Flora, p. 7, pi. A. figs. 1-6. (L. L.) 



16, 40. Read antiquus. 



17, 6. A. simplex, add (originally described by Lesquereux in G. S. S. 



Cox's Second Geol. Rt. of Kentucky, 1875, p. 139. The species 

 milleri, gracilis, divaricaius, quoted on line 1, were described in 

 the same report on pp. 136, 137. 



13, 



5. 



13, 



6. 



14, 



6. 



15, 



la 



15, 



40. 



