56 BULLETIN 997, U. S. DEPARTMENT OF AGRICULTURE. 
Table 44. — Cost of power on farms of different sizes. 
Size of farm (crop acres). 
Number 
of farms. 
Cost of 
keeping 
horses. 
Cost of 
tractor for 
drawbar 
work. 
Total 
cost of 
power. 
Per cent 
tractor 
cost was 
of total, 
cost. 
Less than 80 
7 
28 
71 
56 
47 
36 
19 
22 
$621 
660 
849 
1,006 
1,120 
1,292 
1,367 
1,966 
$172 
279 
279 
331 
340 
386 
452 
576 
$793 
939 
1,128 
1,337 
1,460 
1,678 
1,819 
2,542 
21.7 
80 to 119 
29.7 
120tol59 
24.7 
160 to 199 
24.8 
200 to 239 
23.3 
240 to 279 
23.0 
280 to 319 
24.8 
320 and over 
22.6 
All 
286 
1,076 
341 
1,417 
24.1 
CHANGES IN SIZE OF FARM AND NUMBER OF WORKSTOCK AFTER 
PURCHASE OF TRACTORS. 
The average size of farm and the number of workstock in the 
different areas both before the purchase of tractors and at the time 
of the investigation, are shown in Table 45. For all farms, there 
was an increase of about 20 acres after the tractors were purchased, 
and during the same time a decrease of 1.8 head of workstock. The 
number of acres (total acres in farm) per horse increased from 27.6 
to 37.9, or about 37 per cent. Where there was a change in the 
size of the farm the number of crop acres in the farm before the 
purchase of the tractor was not obtained; consequently figures 
showing the average number of crop acres per horse for all farms 
before the purchase of tractors are not available. 
Table 45. — Size of farm and number of u-orkstock before and after purchase of tractors in 
different areas. 
At time of investigation. 
Before purchase of tractor. 
Area. 
Size of 
farm. 
Work- 
stock. 
Total Crop 
acres per ; acres per 
horse. horse. 
Size of 
farm. 
Work- 
stock. 
Total 
acres per 
horse. 
Madison County, Ohio 
Acres. 
363.0 
202.0 
218.1 
269.5 
247.3 
256.0 
Number. 
8.1 
5.0 
5.4 
6.0 
8.4 
7.0 
Acres. 
44.8 
40.4 
40.4 
44.9 
29.4 
36.6 
Crop acres 
34.1 
28.0 
32.6 
34.1 
24.7 
28.3 
Acres. 
317.1 
182.0 
199.4 
251.8 
240.4 
235.6 
Number. 
9.2 
6.1 
7.9 
8.7 
9.4 
9.2 
Acres. 
34.5 
Seneca County/ Ohio 
29.8 
Madison County, Ind 
25.6 
Montgomery County, Ind 
Livingston County, 111 
28.9 
25.6 
~Kr\ ox"c on n t -y, Til ." ' 
25.6 
All 
257.6 
6.8 
37.9 
29.6 
237. 5 8. 6 
27.6 
The greatest increase in size of farm was in Madison County, Ohio, 
and the least in Livingston County, 111. The greatest increase in 
acres per horse was in Montgomery County, Ind., and the least in 
Livingston County, 111. 
Nine of the 286 men started farming with tractors, 81 increased 
the size of their farms after purchasing tractors, 24 decreased the 
