X. ADDITIONS AND CORRECTIONS. 



P. 191, line 5 from bottom insert "lava-like products " after " but." 



P. 204, line 21 for " Equiseta " read ' Equiseti." 



P. 205, line 10 for "Parts V. and VI." read " Part V." 



P. 207, lines 6 and 7 erase " and to have been experienced also in the extreme 



south. " 



P. 210, line 26 for " literal " read " littoral." 

 P. 216, line 16 for "hollow-jointed" read "hollow, jointed." 

 P. 224, lines 19, 23, 25 for " siliceons " read "siliceous." 

 P. 227, line 8 from bottom insert after "all " " Upper Cambrian or." 

 P. 229, line 2 from bottom for " Hydrocorolla " read " Hydrocoralla. 

 P. 232, line 3 insert (7) before " Syringopora." 

 P. 239, line 3 from bottom for "bifercating " read " bifurcating." 

 P. 240, line 22 for " Eneriucus and Enerinite" read "Encrinus and Encrinite." 

 P. 241, line 11 for "oval" read "anal." 

 P. 245, line 10 for "species" read "examples." 

 P. 248, line 3 under Vermes for " six " read " seven." 

 P. 251, note for " Phyllorarida " read " Phyllocarida. " 

 P. 254, line 24 for "states " read " slates." 

 P. 260, line 23 for " Lirnulas " read "Limulus." 

 P. 266, under Fig. 181 for " Fenstella " read " Fenestella. " 

 P. 267, line 10 for " Brachipods " read " Brachiopods. 

 P. 269, lines 6 and 10 from bottom for "Brown" read "Bronn." 

 P. 272, line 10 from bottom for " Pernian " read " Permian." 

 P. 279, line 8 for "arrange" read "arranged." 

 P. 280, line 6 for " Prosobranchiala " read " Prosobranchiata. " 

 P. 284, line 1 for "Cytolites" read " Cyrtolites." 

 P. 288, line 9 for " Tetrebranchiata " read " Tetrabranchiata. " 

 P. 289, line 5 from bottom for " resembling " read " resembles." 

 P. 302, at close of first paragraph add : " Quite recently, important dis- 

 coveries of Native gold and auriferous ore have been made in the 

 vicinity of Sudbury: more especially in Dennison township." 

 P. 340, line 8 for "outlying " read "inlying." 



