NORMAL DAYS WORK IK WESTERN NEW YORK. 5 
hard, stony, lumpy, or so occupied with stumps as to render the spike- 
tooth or disk harrow ineffective. On account of its heavy draft it 
can not be used in such extreme widths as can the spike-tooth harrow. 
Three horses are more suitable than two on even the narrowest 
widths, while a 4-horse team finds an 8-foot or 9-foot spring-tooth 
harrow a heavy load. 
Table V. — A fair day's work for spring-tooth harrows with teams of two, three, and four 
horses. 
Width. 
2-horse teams. 
3-horse teams. 
4-horse teams. 
Acres. 
Number 
averaged. 
Acres. 
Number 
averaged. 
Acres. 
Number 
averaged. 
Feet. 
6 
7 
8 
9 
9.0 
9.3 
9.7 
36 
6 
7 
10.2 
10.9 
13.3 
33 
21 
10 
14.7 
18.0 
3 
8 
In Table VI is shown the daily averages for the disk harrow with 
2-horse, 3-horse, and 4-horse teams working on fresh-plowed and on 
well-packed land, respectively. It appears that with two and three 
horses, increasing the width of the disk harrow does not result in any 
great increase in acreage disked. This is more true on fresh-plowed 
than on well-packed land. Where four horses are used, incr easing 
the width results in more marked increases in daily accomplishment. 
The heavy draft of the disk harrow accounts for the lack of increase 
in results with increasing width where 2-horse and 3-horse teams are 
used. The implement is an overload, as a rule, for anything less 
than four horses; so that any increase in width with the smaller units 
of power results in less speed and mileage per day. 
Table VI. — A fair day's work for disk harrows using teams of two, three, and four horses, 
respectively. 
Horses. 
Width. 
On fresh-plowed 
land. 
On well-packed 
land. 
Acres. 
Number 
averaged. 
Acres. 
Number 
averaged. 
2 
2 
2 
2 
3 
3 
3 
3 
4 
4 
4 
Feet. 
5 
6 
7 
8 
5 
6 
7 
8 
6 
7 
8 
7.1 
7.5 
7.8 
7.8 
8.1 
8.2 
8.1 
8.8 
7.6 
9.8 
11.1 
60 
152 
44 
38 
44 
205 
90 
48 
16 
15 
25 
8.4 
9.1 
9.6 
10.0 
9.4 
9.8 
9.9 
10.3 
9.1 
12.2 
13.3 
61 
149 
44 
38 
44 
201 
89 
49 
155 
15 
25 
