■<i7fi 



REPORT OF NATIONAL MUSEUM, 1904. 



that "all his reasons for calling the Hudson terrane Taconic were 

 based on errors of stratigraphy, and it was only a fortunate happening 

 that any portion of the upper Taconic rocks occur where he placed 

 them in his stratigraphic scheme,'' 1 still there would, to the unpreju- 

 diced, seem to be abundant room for the recognition of the name, a fact 

 which Mr. Walcott has himself recognized by the adoption of the bor- 

 rowed term Ordovician. Moreover, ruling out the term on the ground 

 of blundering is scarcely just, since, as Winchell pertinently remarks, 

 a similar ruling would take from Columbus the credit of having dis- 

 covered America, since he blundered upon it, expecting to strike India. 

 The following tables illustrate the three principal stages of the 

 Taconic controversy up to 1908, in the columns to the left the subdi- 

 visions of Emmons being given, and in those to the right the equiva- 

 lents as recognized by Dana and other authorities. 



