X BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA. 



Page 38, line 18 from bottom ; strike out '' the land features in the interval are so 

 simple " and insert the Belmore (Ridgeway) was followed continu- 

 ously by Spencer, and the slope was also examined by him on three 

 transverse lines, so 

 " 60, " 3 from top ; for " New England " read Massachusetts 

 " 67, "19 " " ; for -"Whipple" read Whittle 



" 67, "16 " bottom; for "Whipple" read Whittle 



" 70, " 18 " ; for "albite-calcite-diopside " read sdb'ite, calcite, diop- 



side 



" 70, " 5 " " ; after 11 The" insert rare 



" 78, " 17 "• " ; for ".03 " and ".07" read 3 and 7 



" 78, " 16 " " ; for ".01£ n read H 



" 85, " 10 " " ; for " Directly below" read Directly to the left 



" 98, " 8 " " ; for " ibbon " read ribbon 



" 107, " 2 " top ; for " baseleveled " read planed 



" 107, " 25 " " ; for " baselevel " read graded 



" 108, " 4 " bottom ; for " baselevel " read graded 



" 109, " 14 " top; for "examples" read example 



"110, " 6 " " ; for " baselevel " read plain 



"110, "24 " " ; for " baselevel " read graded 



"111, "16 " " ; for " baselevel" read graded 



" 112, " 6 " bottom ; for "baseleveled" read planed 



" 113, " 10 " " ; omit "those of" 



" 113, " 10 " " for "it" read the same 



"113, " 7 " " for " this " read the 



"120, "11 " " omit "—"after "downward" 



"121, " 7 " top ; for " the area " read this area 



" 122, " 14 " bottom; after " Herschell " should be reference to following 



foot-note: Geol. Soc. London, vol. ii, 1857, p. 548 



" 123, "18 " top ; for "it is more " read it is still more 



" 125, " 4 " " ; for "in" read on 



" 136, "20 " bottom ; for " Castalea " read Castalia 



" 142, " 4 " top ; for " Foobes " read Forbes 



" 145, "11 " bottom ; for " Conus " read Cornus 



"167, " 1 at top; for "176" read 167 



" 169, insert the following note on the occurrence of leucite : 



Two additional localities for leucite have been casualty mentioned. J. Curie et 

 G. Flausand, in a pamphlet entitled " Etude succincte sur les Roches eruptives de 

 l'Algerie," which is reviewed in the Neues Jahrbuch, 1890, volume ii, page 406, 

 mention leucite-basalt at Ain Temouchement, Algiers. F. W. Hutton, in a paper 

 on the igneous rocks of New Zealand, published in the Proceedings of the Royal 

 Society of New South Wales, volume xxiii, 1889, page 105, states, in a foot-note, 

 that W. Skey had mentioned a leucite-basalt from near Castle Point, on the east 

 coast of Wellington. Skey's announcement is referred to as original in the Col. 

 (Colonial?) Museum and Laboratory Reports Number 10, page 48, a publication not 

 accessible to the writer. — J. F. K. 

 Page 171, line 9 from top : leucite-absarokite has not been found in place 



" 181, VII; analysis made for Arnold Hague, not J. P. Iddings. See Am. Jour. 

 Sci., vol. xxxviii, 1889, p. 47 



" 198, lines 20-21 from top; omit and the outcrop on the cliff of the more im- 

 portant thrust-planes 



