FARM EXPERIENCE WITH THE TRACTOR. 
19 
most important differences being in the estimated life and the cost 
of repairs required annually; but the percentage of replies, days 
used annually, hours lost, horses replaced, and percentage finding 
custom work profitable, all of which are favorable to the kerosene 
tractor, are worthy of nolo. 
While this table shows that the amount of equipment per tractor 
is greater for the kerosene than for the gasoline tractors, the difference 
being $42, this figure is really favorable to the kerosene tractor, as it 
is shown in Table X that the kerosene tractor pulls a greater cross 
section of plows, etc., than does a gasoline tractor of equal rating. 
It will, therefore, require a larger gang to provide a full load, and 
consequently the cost of the equipment is slightly higher. 
Table X presents a comparison of the operating factors for gasoline 
and kerosene tractors of 15 and 30 horsepower, drawbar rating. 
These figures were furnished by men in North Dakota with only one 
year's experience and are therefore probably slightly more favorable 
to the tractor than would be the case if the owners were men of longer 
experience. The reason for using figures furnished by men with only 
one season's experience is the fact that among the reports for tractors 
which had been used for two seasons there were very few for gasoline 
and kerosene tractors of exactly the same ratings for which complete 
information had been furnished. While the number of these machines 
among the 1-year-old tractors is not large, it is believed to be sufficient 
to insure a fairly reliable comparison. 
Table X. — Comparison of results obtained on farms in North Dakota with gasoline and 
kerosene tractors during their first season's use. 
Item of comparison. 
Drawbar ratings of tractors. 
15 horsepower. 
Gasoline. Kerosene. 
horsepower. 
Gasoline. Kerosene 
Number of tractors reported 
Ploxed per hour acres.. 
Depth plowed. inches. . 
W idt h of plow do 
Width of harrow drawn at same time as plows. . . do 
Distance traveled per hour miles. . 
Fuel used per day gallons.. 
Cost of fuel used per day dollars.. 
Cylinder oi! used per day gallons. . 
Cost of cylinder oil used per day dollars. . 
28 
1.4 
5.9 
77.1 
98.1 
2.1 
33.0 
6.41 
2.5 
.91 
24 
1.5 
6.2 
80.6 
102.9 
2.1 
44.0 
5.50 
3.3 
1.29 
41 
2.1 
6.1 
110.8 
96.3 
2.3 
57.9 
10.26 
4.1 
1.69 
27 
2.3 
6.3 
123.3 
107.7 
2.2 
66.5 
8.78 
4.6 
1.84 
Table X show T s that the acres plowed per hour, the depth plowed, 
width of plow, and width of harrow are all greater for the kerosene 
than for the gasoline tractor. The amount of fuel consumed is 
greater for the kerosene tractor, but the cost is less, on account of 
'the lower price per gallon. Both the amount and value of the lubri- 
cating oil used are greater for the kerosene tractor, however. 
