219 



8. T. H. Kearney. (Northern limits of " austroriparian " plants.) Contr. V. 

 S. Nat. Herb. 5 : 450-457. 1 901. 



9. H.L.Clark. Notes on Maryland plants. Rhodora 6 : 176-177. Aug. 1904. 



10. W. D. Sterrett. Report on forest conditions in Delaware. Del. Coll. 

 Agric. Exp. Sta. Bull. 82. Dec. 1908. 



ir. C. S. Williamson. Notes on the flora of central and southern Delaware. 

 Torreya 9 : 160-166. Aug. 1909. 



There is also considerable valuable information about this 

 region in the reports of the Bureau of Soils of the United States 

 Department of Agriculture, and in other geographical and geo- 

 logical literature, which it would hardly be worth while to men- 

 tion in such a brief and superficial paper as this. 



Having given credit to previous botanical explorers, I will now 

 mention some of my own experiences in the region between the 

 Delaware and Roanoke Rivers, on the way from New York to 

 North Carolina in July, 1908. On July 18 I left the fall-line at 

 Wilmington, Del., and, without getting off the train, went south- 

 ward via the "Cape Charles route" nearly the whole length of 

 the Delaware peninsula, a distance of about 200 miles, to Cape 

 Charles, Va., where connection is made with the steamer for 

 Norfolk. This route passes through all three counties of Dela- 

 ware ; Wicomico, Somerset, and Worcester in Maryland ; and 

 Accomac and Northampton in Virginia. On July 19 I traveled 

 westward from Norfolk on the old Atlantic and Danville R. R. 

 (now a part of the Southern Railway), passing through the 

 counties of Norfolk, Nansemond, Isle of Wight, Southampton, 

 and Greenesville, before crossing the fall-line near Emporia, about 

 75 miles from Norfolk. 



The various kinds of country seen in this 275-mile journey 

 through the coastal plain may be briefly described as follows. 

 From Wilmington nearly to Townsend, a distance of 29 miles, 

 the route is through the Cretaceous region, a direct continuation 

 of the corresponding portion of New Jersey, which has been 

 described by Hollick * as the " tension zone" and by Stone f as 

 the Delaware Valley-West Jersey region. The topography 

 here is moderately hilly, the soil is grayish and loamy, and the 



* Am. Nat. 33 : 3, 8, etc. Jan. 1899. 



f Proc. Phila. Acad. 1907: 452-459. 1908. 



