FARM MANAGEMENT PRACTICE OF CHESTER COUNTY, PA. a 
‘township at the south edge of the area and along the Brandywine 
River at the northeastern edge. In these two localities the elevation 
is less than 200 feet above sea level. The highest portion is in the 
northwestern quarter where the land rises somewhat more than 600 
feet above sea level. The greatest difference in elevation to be found 
in the area is thus somewhat over 400 feet. When it is remembered 
that in some good agricultural regions differences as great as this 
are found on a single 200-acre farm it will be seen that the topog- 
raphy here is not at all rough and broken. The uplands are rolling, 
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ELEVATION 
UNDER 200 FEET [_] 
201TO 300 » 
o; 301T0 400 » 
Gases 0% 401TO0 500 " 
. Up y) 501T0 600 » 
BEZZ OVER 600 
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lie, 3.—Topography of area surveyed. 
resembling somewhat the surface of the bluegrass area of Kentucky, 
though the unevenness of the surface is more marked and is cut by 
many streams, frequently with steep, wooded slopes. (See frontis- 
piece.) In the western portion of the area the land is in some cases 
steep enough to cause more or less washing, especially where fall- 
plowed land is left bare during the winter. In general, however, the 
topography is rolling, the natural drainage being excellent except 
along the stream bottoms, which are generally in permanent grass. 
(See Pl. IJ.) It is seldom necessary to resort to artificial drainage 
on the farms in this area... Never-failing springs:are found on nearly 
every farm, and the well-kept pastures are thus abundantly supplied 
with water. Some of the streams are utilized for power by means of 
