NORMAL DAY S WORK FOR VARIOUS FARM OPERATIONS. 
11 
When the sulky plow data were grouped by teams working at 
reported depths with the widths averaged, the width decreased as 
the depth increase^ 1 *>*td the same was true of the acreage per day and 
per horse. On account of the greater width of sulky plows as com- 
pared with walking plows, the cross section increases rapidly with 
increased depth, thus limiting the implement to more shallow work 
with a given amount of power. When four horses are used, the 
acreage per 1,000 pounds of horse was practically the same at all 
depths reported, indicating that a cross section of about 26 inches 
and a daily acreage of 0.65 acre is a comfortable and reasonable task 
for each 1,000 pounds of horse with this implement. 
Comparison of the data for walking and sulky plows indicated that 
for the same widths and depths with the same number of horses in 
the teams the sulky plow is somewhat more efficient than the walking 
plow from the standpoint of area covered in a day, but that the sulky 
type is limited to more shallow plowing. 
In Table III the data for sulky plows have been brought together 
by horses in the team and under each team the averages for the 6-inch 
depths are given for the 12, 14, and 16 inch widths. This table is in 
all respects similar to Table II. The daily duty of any team, width, 
and depth can be ascertained by inspection of the fourth and fifth 
columns. 
Table III. — A normal day's work ivith a sulky plow, giving the daily acreages reported 
at 6-inch depths for each width, adjustments for these ividths, and a scale of allowances 
for other depths. 
[Net hours in the field, 9.65.] 
Team and width. 
Plowed 
per day. 
Number 
averaged. 
Adjusted 
acreage. 
Allow- 
ance per 
inch for 
other 
depths. 
Prac- 
ticable 
depths. 
Two-horse teams: 
Acres. 
1.84 
1.93 
2.31 
1.93 
2.41 
2.94 
3.00 
2.83 
3.19 
11 
18 
4 
7 
59 
171 
1 
6 
25 
1.65 
1.75 
1.85 
2.20 
2.40 
2.60 
2.30 
2.50 
2.80 
Acres. 
0.10 
.12 
.15 

.10 
.12 


.10 
Inches. 
3 to 8 
3 to 7 
3 to 6 
Three-horse teams: 
3 to 10 
3 to 9 
16 inches 
3 to 8 
Four-horse teams: 
3 to 12 
3 to 12 
3 to 10 
Compilation of the data for gang plows indicated that 58 per cent 
of the gang plows used have 14-inch bottoms, 30 per cent use two 
12-inch bottoms, while only 12 per cent use other sizes. A limited 
number use a light gang with two 10-inch bottoms. It was seen also 
that deep plowing is practiced less with gang plows than with sulky 
plows, 29 per cent reporting 5 inches deep, which percentage would 
doubtless be largely increased if correction were made for concentra- 
tion on the 6-inch depth. Less than 2 per cent reported depths 
