FARM MANAGEMENT PRACTICE OF CHESTER COUNTY, PA. 45 
When one of these enterprises is given a magnitude greater or 
smaller than this the farm profits become less. This does not appear 
to be the case with the dairy enterprise on the average farm. ‘Table 
XX shows that the average labor income of each group of farms 
deriving 20 per cent to 90 per cent of their income from dairy prod- 
ucts is above the general average of the community. 
TABLE XX.—Percentage of income from dairy products as related to lator 
imcome. 
Per cent of income from dairy\ Nonellt to | 10 to | 20 to | 30 to | 40 to | 50 to | 60 to | 70 to | 80 to \oo4 
[OPOXGOND ICUS) 5 a a el if aN Bs 19. 29. 39. 49. 59. 69. (Oe 89. 
Nam bermoflarms. ..22-22.25522-<- 31 26 26 65 73 71 47 19 11 7 2 
Adjusted labor income.......---- 43 94 827) 11/40) 103) |) 109") 102)" 130) | 103") 101 55 
It is considerably lower on those farms deriving less than 20 per 
cent of their income from this source. These figures indicate that 
under the conditions prevailing in this region the dairy business may 
be made profitable whatever position it may occupy on the farm, pro- 
vided, of course, the cows be of good quality. This is the only enter- 
prise in this region of which this is true. 
It is to be inferred from these results that if the cows are of high 
quality it is relatively unimportant whether the farmer has several 
other more or less important sources of income. With cows of poor 
or ordinary quality it becomes increasingly important that the busi- 
ness be diversified; that is, that other sources of income be provided. 
This conclusion is strongly reinforced by the results given in Table 
XLIV, in which it is shown that with cows producing less than $50 
worth of product annually the larger the herd the less the profit, while 
with cows producing more than $100 worth of product the larger the 
herd the greater the profit. 
The failure of Table XX to show a particular percentage of income 
from dairy products to be more profitable than any other may be due 
to the fact that the quality of the cows on the various farms is highly 
variable, and, as will be shown later, the producing capacity of the 
cows is one of the very most important factors of profit on these 
farms. If the labor inceme could be further adjusted so as to elimi- 
nate the effect of variation in quality of cows, it might be found that 
there is an optimum status of the dairy industry here. It is also 
practically certain that if all the cows were as good as the best the 
most profitable percentage of income from this source would be 
higher than if the cows were all of poor or medium quality. 
Lypes of dairying—Table XXI shows the relative importance of 
the various types of dairying in the Chester County survey area. 
The farms here represented as selling creamery milk differ from those 
