l6 SMITHSONIAN INSTITUTION 



ground. We collected from the mound and from the slopes of the 

 low hills just southeast of it and obtained a large number of specimens. 



Missouri. — At Rolla we visited the offices of the Missouri Geo- 

 logical Survey, and the Department of Geology at the Missouri School 

 of Mines, and collected from the small Devonian outlier just west 

 of the city. In the Ozarks fossils commonly occur in the chert, which 

 replaces much of the limestone. In the country about Eminence good 

 specimens were abundant. From Eminence we went east to Cape 

 Girardeau to see Upper Ordovician and Silurian strata. With Perry- 

 ville as our headquarters for several days we collected fossils in 

 the Little Saline Yallev which contains a long complexly faulted Paleo- 

 zoic sequence. Our chief interest here was the Bainbridge limestone 

 of Aliddle Silurian age, containing many crinoids, blastoids, and 

 brachiopods. As none of this material was represented in the Museum 

 collections, we selected many blocks to be broken up in the laboratory. 

 In addition to the Silurian fossils we collected specimens from the 

 Middle Ordovician and Lower and Middle Devonian rocks. On our 

 way to Indiana we stopped at Louisiana. Mo., to see F. R. Long, 

 collector of Silurian fossils. 



Indiana. — Southwest of Logansport on the Wabash River and not 

 far east of the little village of Georgetown occurs a large exposure 

 of Silurian dolomite. From a small undolomitized portion of this out- 

 crop we collected many brachiopods. From this place we went south 

 to New Albany to collect Devonian and Mississippian fossils under 

 the guidance of Guy Campbell. 



In summary it should be said that we covered about 8,000 miles on 

 our trip, visited a number of localities that brought fossils to the 

 Museum not previously represented in the collections and studied 

 Lower Ordovician strata in five States, obtaining good collections 

 and much data useful in correlation. 



