146 
Psyche 
[December 
in the second diagram, the trees to the east becoming older and 
new trees gradually growing up in the empty west. 
That this same procession of forest and mounds is going on 
still is indicated in the second diagram which is based upon a 
detailed survey made in April 1920 by students, Hoffmeister, 
Swartz and Kellum combined with a re-survey in June 1926. 
The mounds present in 1920 are indicated by dots, except two 
which were then deserted and are indicated by crosses. The 
mounds grown up in the past four years are indicated by tri- 
angles except those now deserted which are represented by 
squares. 
The last survey being made after a severe woods fire in the 
winter had destroyed underbrush and many trees; mounds were 
more conspicuous than formerly. 
In the diagram the regions of little shade are left clear while 
the extensions of the wooded area are outlined. It is noteworthy 
that the woods to the east have spread largely over the area 
leaving but a strip of clear ground separated from the York 
Road by narrow band of trees. 
The trees are chiefly young seedling oaks, black gum, maple, 
tulip, dog-wood etc. of small size; with much black locust run- 
ning rapidly from roots in the loose surface soil. The dense under- 
growth of Japanese honeysuckle, catbriar, blackberry and 
“weeds” extends out into the sunny areas. 
Of the 118 mounds found in June 1926, 42 are in the main 
open sunny region to the west, 11 in its chief extension toward 
the east, about 28 in various small clear areas amidst the woods, 
21 along the grass grown roads to the east; leaving only 15 
mounds in the denser shade of the woods as contrasted with the 
above 103 in the sun. 
The old mounds of 1922 are largely in middle and eastern 
not in the western part; about 37 central and east to 14 west. 
On the other hand the new mounds of the past four years are 
some 30 in the west, 22 in the mid region, and fifteen to the east 
and of these 11 are along the grassy roads. Thus in four years 
the advance of mounds has been into the sunny west, and along 
the grass roads which were not previously occupied 
