BULLETIN 1069, U. S. DEPARTMENT OF AGRICULTURE. 
yearly butterfat production was 251 pounds, or about that of the 
average association cow, had an average income of $57.82 over cost 
of feed, or more than twice as much. Income over cost of feed per 
cow is what remains for labor, miscellaneous expenses, and profits. 
# /40 
/30 
//O 
/OO 
\ " 
I ao 
<j eo 
% so 
\ 3 ° 
* ao 
fO 
O 
-JO 
SO /OO /SO 200 250 300 3SO 400 4SO SOO 
POUNPS OF BUTTERFAT PER COW 
Fig. 3. — Relation between butterfat production and income over cost of teed. 
Figure 3 shows in graphic form the relation of butterfat produc- 
tion to income over cost of feed as recorded for the larger groups in 
Table 2. 
