Keyes — The Guadalupan Series. 129 



decade ago, the opinion that faunally at least the so- 

 called Permian strata of Kansas and of northwest Mis- 

 souri must be regarded as much older than the true Per- 

 mian section of Eussia and that in the Mississippi valley 

 Permian deposition, with the possible exception of the 

 red-beds, was entirely wanting, my statements were se- 

 verely criticised. I think, however, that the results of 

 the recent investigations in the Guadalupe mountains 

 more than substantiate the conclusions which I long ago 

 reached. 



Summing up, it may be concluded : — 



(1) That the real discovery of true Permian equiva- 

 lents in America must be ascribed to Dr. B. F. Shumard, 

 who, by the way, took no part in the Kansas controversy. 



(2) That Late Carbonic time in America is a vastly 

 more important period than has been generally hereto- 

 fore supposed. 



(3) That the so-called Permian section below the Red- 

 Beds of central Kansas belongs in reality to a Mid Car- 

 bonic series and is not the homotaxial equivalent of the 

 original Permian division. 



(4) That no part of our Missouri strata can be re- 

 garded as belonging to the Late Carbonic or Permian 

 period. 



Issued December 29, 1910. 



