418 HARPER: VEGETATION OF THE COASTAL PLAIN 
Polygala lutea, Trilisa, Sabbatia lanceolata, Habenaria blephari- 
glottis, and Chondrophora, were not seen at all in South Carolina, 
in either year, and a number of others seem to be rare in that state. 
In this connection it is extremely interesting to note that on Dr. 
Hilgard’s agricultural map of the southeastern states* (which by 
the way is undoubtedly the best vegetation map of that part of 
the country ever published), he assigned the Cape Fear pine-barrens 
to the same subdivision as the Altamaha Grit region of Georgia 
(together with certain parts of other states), but skipped South 
Carolina with this subdivision entirely. This idea of Dr. Hil- 
gard’s is all the more remarkable when one observes that the 
agricultural maps of the individual states involved (in the sixth 
volume of the same series) give scarcely a hint of this state Of 
affairs. 
Quercus Catesbaet, Q. cinerea, Marshallia, Chondrophora, 
Oxypolis, Vernonia, Tofieldia, and Polygala cymosa were not seen 
any more after leaving the pine-barrens, and three of these, the 
Marshallia, Oxypolis, and Polygala, were not even seen northeast 
of Wilmington. All except the Marshallia and Vernonia are 
known or supposed to extend considerably farther north, but they 
cannot be very common along the route that I traveled from Wil- 
mington to New York. 
On reaching the banks of the estuary of New River in Onslow 
County, half way between Wilmington and New Bern, I left the 
pine-barrens behind. From there to Mackey’s Ferry on Albe- 
marle Sound, a distance of about 122 miles, I was in a country very 
similar in most respects to that between Laurel Hill and Rosin- 
dale in the same state, and probably connected with it, but with 
certain differences in vegetation which I am not quite prepared 
toexplain. This part of the journey should perhaps be subdivided 
further, for low hills with hammock-like vegetation weret fre- 
“7 st map in the fifth volume of the Tenth Census reports. 
Another interesting fact in this connection is that Dr. Eugene A. Smith about 
the same time published a map of similar import (the first map in the fourth report 
of the U. S. Entomological Commission), based on essentially the same data, which 
combines the various kinds of pine-barrens under one color, making no distinction 
between those of South Carolina and other states; but this may be due only to the 
fact that this map is smaller and does not attempt to show so much detail. 
tI once supposed (see Science II. 22: gor. 1905) that the term “hammock” 
was used in North Carolina, but the only evidence I had (U. S. Geol. Surv. Bull. 
