542 PROCEEDINGS OF THE WASHINGTON MEETING 



rarity of the types of later facies, it appears that the beds below the Lower 

 Washington hmestone can not yet be regarded as conchisively referable to the 

 Rothliegende, though they contain a flora which is certainly transitional. The re- 

 enforcement of this flora at the levels of the Washington and Dunkard coals by 

 the more important and distinctly characteristic Rothliegende species mentioned 

 above seems to fnlly justify the reference of the latter to the Rothliegende, the 

 lower boundary of which may probably be safely drawn as low as the Washington 

 limestone, which is as yet the lowest observed Callipteris horizon. Further search 

 in the floras of the lower beds of the Dunkard and in the Monongahela is neces- 

 sary before the upper boundary of the Coal Measures can be definitely ascertained. 

 The flora of the upper portion of the Dunkard is to be compared with those of 

 the Stockheim and Cusel beds in Germany and of the series in the basin of Brives 

 in France. 



It is notable that none of the characteristic coniferous genera, Ullmannia, 

 present in the Upper Rothliegende, or Ty lodendron and Walchia, the latter of which 

 descends into the top of the Coal Measures, has yet been found in the Dunkard, 

 although all are reported in Prince Edward island, and Walchia is said to occur in 

 the Permian of Texas. No trace of the very large-lobed Odontopterids of the Wan- 

 genheimi type and the connate lobed Callipteris species of the Russian Permian 

 or of the genera Plagiozamites, Pterophyllum, and true Dicranophyllum, which 

 occur in the Rothliegende of most of the European basins, has yet been found in 

 the Appalachian trough. 



Our highest Appalachian Paleozoic beds do not appear, so far as yet studied 

 paleobotanically, to extend abovQ the Lower Rothliegende of western Europe. 

 The Zechstein, if originally present, as seems not unlikely, has long since disap- 

 peared. The reference of the greater part of the Dunkard to the T^wer Rothlie- 

 gende appears to be well founded ; but it seems to the writer as probable that the 

 plants of the Upper Dunkard or of the lowest of the terranes of western Europe 

 that are now generally classed as Rothliegende are hardly of so late a date as the 

 flora of the Artinsk stage of Russia. 



Remarks were made by I. C. White, G. C. Martin, and the author. 



The second paper was received from the list of Section E. 



AN IMPORTANT BUT NOT WELL KNOWN LOCALITY FURNISHING CRETACEOUS 



FISHES 



BY O. P. HAY 



[A hstracf] 



This paper called the attention of geologists and collectors to a locality in the 

 region about Yankton, South Dakota, from which Dr F. V. Hayden obtained sev- 

 eral species of fossil fishes for Professor E. D, Cope. Most of the genera are related 

 to or identical with genera from mount Lebanon, Syria. 



The third and fourth papers were presented together, as follows : 



STUDIES OF THE GRAIN OF IGNEOUS INTRUSIVES 

 BY A. C. LANE 



