ERRATA. 
Page xliii, foot-note, line 2, read “excursions” for “extensions.” 
Page lxvi, line 2 from bottom, read “ Professor ” for “ Professer.” 
Page lxvi, last line, insert “ See Transactions , Vol. II., Part III., Page 127.’ 
Page xcv, line 8, read “ Part IV.” for “ Part III.” 
Page xcvii, line 21, read “Part IV.” for “Part III.” 
Page cxi, line 6. insert “See Tra?isactions , Vol. II., Part IV., Page 143.” 
Page clvi, last line, read “aizoides” for “azoides.” 
16 J 
