199 



a creek near the railroad flows for some distance over rocky 

 shoals, * rather an unusual sight in the coastal plain. 



The next day, the 27th, was spent in company with Dr. Eugene 

 A. Smith, state geologist of Alabama, in examining some of the 

 geological and botanical features of the northwestern corner of 

 Perry County, between Hattiesburg and Monroe station. Perry 

 County is not only entirely within the pine-barrens, but also in a 

 region analogous to if not continuous with the Altamaha Grit 

 region of Georgia, f Along the Bowie River and some of its 

 tributaries, near Bowie station, is exposed several feet of a soft 

 pale-greenish or yellowish aluminous rock devoid of fossils 

 (known to geologists as the Hattiesburg phase of the Grand 

 Gulf formation), to all appearances identical with the outcrops of 

 Altamaha Grit on banks of streams in southeast Georgia, four 

 or five hundred miles farther east. But there are certain differ- 

 ences in the topography and flora in the two states which I am 

 not quite prepared to explain. For instance the creeks and 

 small rivers in this part of Mississippi have pretty well defined 

 " second bottoms " along them, with a sort of hammock flora, 

 including among other things Fagiis americana, Illiciiim flori- 

 damnn and Kalniia latifolia, \ species which I have never seen in 

 the Altamaha Grit region of Georgia, though the Fagics and 

 Kalviia come right up to its borders. Similar bottom-lands 

 with about the same vegetation can be seen at a number of places 

 in southern Alabama. 



The flora of dry pine-barrens on the neighboring hills seems 

 very similar to that in the corresponding parts of Georgia and 

 Alabama, § as nearly as I could determine at that season, but 

 moist pine-barrens and branch-swamps are very poorly developed 

 in that vicinity, probably because of the absence of the super- 



* Prof. S. M. Tracy has distributed specimens of Podostemon abrotanoides Nutt. 

 («w. 32^1 and 32^8, collected June 12, 1897) from the vicinity of Enterprise, which 

 presumably came from this place or one very similar. 



t See Bull. Torrey Club 32 : 141-147. 1905. 



% For a list of some other woody plants growing in such situations see page 349 of 

 Dr Hilgard's report. 



\ Astei' adnatus, Helianihus Radula, i\Iyrica puinila, Qiiercus niarylandica and 

 Q. digitata were some of the species noted. 



