STANDARD DAY S WORK IN" CENTRAL ILLINOIS. 7 
use of 5 and 6 horse teams, this being due to the same conditions that 
cause the use of larger teams on the sulky plows in the fall. 
Table V. — Fall plowing with gang plow. 
Width bf 
plow. 
Number 
of horses. 
Number 
of reports. 
Acres per day. 
Average. 
Acreage most often 
reported. 
Inch's. 
24 
28 
28 
2S 
5 
4 
5 
6 
20 
GO 
118 
153 
4.40 
4.10 
4.56 
4.71 
4 {10 reports). 
4 {36 reports). 
/ 4 {^5 reports). 
\ 5 {38 reports). 
5 {78 reports). 
There is a decided decrease in the ground covered per day in 
the fall, the 28-inch plows and four horses accomplishing 17 per 
■ 
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Fig. 1. — The 2-bottom gang plow, with 5 horses, covers a little over 5 acres per day in 
spring and 4.71 acres in the fall. This is a popular outfit. 
cent less than in the spring, the 5 -horse outfits 11 per cent less, and 
six horses 13 per cent less. In fact, six horses cover on an average 
only as much ground per hour with these plows in the fall as do 
four horses in the spring. 
COMPARISON OF SULKY AND GANG PLOWS. 
A comparison of an average day's work for 16-inch sulky plows 
and 28-inch gang plows shows that so far as horse labor is concerned 
the gang plow drawn by four horses is the most efficient unit in both 
spring and fall. In the spring this outfit covers 1J acres per day 
per horse, while both the sulky plow drawn by three horses and the 
gang plow drawn by five horses cover 1 acre per day per horse. The 
gang plow drawn by six horses covers but nine-tenths of an acre per 
horse. 
In the fall four horses with the gang plow cover 1.02 acres per 
horse, while three horses on the sulky plow and five horses on the 
