Cdlu. 



138 



Columnaria 



Emmons' Geology of the Second Dis- 



^/t^^ilSr^^^^^ 6%^^?/ formation. (See Columnar^a 

 iml^^^^^i^^ incerta from Chazy ; Billings, Canad. 



.. ;^*,, ^x... . ^r-i , "- J II jsq-^i-^ y^-^^ jy 3_g59^ — ggg Columnaria 



y parva from Cliazy ; Billings, Oanad. 

 Nat. Vol. IV, lSb9.)—IIh, 



tr 7^ -^ipu.jmu^fe_mli/l^ Columnaria alveolata. See Ap- 

 ^-'•5» ^# pe7idix. 



Conchodus plicatus, Dawson, Acadian Geol. 1868, page 



209, f. 53, a fine fish tooth (which 

 could easily be mistaken for a shell) 

 from the Nova Scotia coal measures, 

 at the Joggins. Apparently referable 

 to McCoy's British genus Conchodus. — 

 ^7 XIII. 



Cone-in-cone, or Tutenmergel. A curious arrangement 

 ^ . ^ of the material of a bed of 



Y J I , Cone-in- one. 



aW^- clay, and of clay strata of va- 



rious agos, often mistaken 

 for some sort of fossil organ- 

 ism. Contradictory explana- 

 tions are given of its origin. 

 It has been often figured; 

 the figure here given is one 

 copied from Dawson's Aca 

 dian Geology. — A similar 

 structure on a grand scale is 

 sometimes seen in coal. Les- 

 ley's Manual of Coal, etc, 1856, page 164, fig. 59, the then ex- 

 posed face of a mine 10 m. N. of the summit of the Nashville 



and 

 Chat- 

 anoo- 

 ga RR. 

 in Ten- 

 nessee. 

 —See 



also 

 Owens 



GeoL, 



