10 
BULLETIN 1204, U. S. DEPARTMENT OF AGRICULTURE. 
tions under which to operate. There are approximately 2,000 acres 
in the entire property, 675 being in timber and 1,325 in cleared land. 
The cleared acreage was distributed as follows: Cotton 400 acres, 
corn 250 acres, meadow 250 acres, soy beans 100 acres, pasture 75 
•es, weeds 250 acres. 
A sketch map was prepared to show the location of the different 
fields on the Shirley property, and each cut was numbered, for con- 
Pig. 8.— The 
Dayton hopper " removed from plane. This hopper was attached outside 
the body of the plane. 
venience in keeping records as well as for directing the operation of 
the planes. The mosaic map taken photographically from a plane, 
shown in Figure 9, was not available until practically the end of the 
experiment, but the need for it was very apparent throughout the 
work. In arranging the program of work for a day, it frequently 
proved difficult to provide a description based on ground conditions 
which would exactly locate the area in mind. Such a mosaic map 
would also have been of great value in planning in advance the 
methods of flight for each field. 
