FARM MANAGEMENT PRACTICE OF CHESTER COUNTY, PA. 57 
average farmer is able to make a labor income above $1,000. In our 
work we must deal primarily with the average farmer and state the 
conditions under which he can be successful. The unusual man can 
succeed under much more difficult conditions. 
Figure 8 shows the relation between labor income and size of farm 
in graphic form. The points of the broken line in this figure rep- 
resent the average size of farm in each of the groups shown in Table 
XXVI and the average labor income made by each of these groups 
of farmers. Size of farm is shown at the bottom of the figure and 
labor income in the left margin. The broken line shows even more 
clearly than the figures of Table X XVI that as the size of farm 
increases the average labor income increases, and within the limits 
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Fie. 8.—Relation of size of farm (area) to labor income; 378 owner farms. 
of the sizes found in this survey the increase in labor income keeps 
pace with increase in area. If the larger farms were devoted to 
distinctly different types of farming from the small farms, or if 
there were many farms so large that their owners could not manage 
them efficiently, there would probably be a different story to tell. 
Figure 9 shows quite clearly that size of farm is not the only factor 
of efficiency in farming. In this figure the labor income of every 
one of the 378 farms is shown individually. Each of the 378 vertical 
lines represents the labor income of a particular farm as measured 
on the scale at the left of the diagram, the highest labor income 
being approximately. $3,700 on a farm of about 175 acres. In this 
diagram the farms are arranged according to size, the smallest being 
