NORMAL DAY'S WORK FOE VARIOUS FARM OPERATIONS. 7 
5 to 20 per cent have been made in some of the tables, although some 
are presented without such adjustments. These adjustments are 
noted in connection with the respective tables. 
Determining the Net Working Day. 
In order that the factors obtained might be brought to a uniform 
basis and so be comparable throughout and with other and similar 
data, the inquiry was so worded as to develop the net hours actually 
in the field or at work, during each operation. The time employed 
in making ready, hitching and unhitching, going and coming, and for 
meals, has been subtracted and a net working day established in 
terms of which the respective operations are tabulated and discussed. 
The respective net hours worked are given in the heading of each 
appropriate table. 
Analysis op the Data. 
In the following tables only a small part of the total number of 
averages for each operation, respectively, is included. Original 
averages are given in each table only for those widths, sizes, crews, 
teams, etc., for which the largest numbers were reported. Adjust- 
ments and scales of allowances are then included in the respective 
tables from which the work factor for any feasible width, depth, 
team, or crew can be computed, using the average for the most common 
unit of equipment as the standard. These adjustments and allow- 
ances are based in each case upon analytical tables covering the entire 
number of reports for the respective operations. In this analysis 
the original data were tabulated in every pertinent arrangement 
and factors deduced for each variation in working size of implement, 
load, crew, and team. From these deduced factors the scales of 
allowances in the tables have been derived. The analytical tables 
referred to were too extensive to be included in this discussion. 
They covered several groupings each for reports on 1,852 walking 
plows, 1,056 sulky plows, 822 gang plows, 2,075 spike-tooth harrows, 
823 spring-tooth harrows, 1,670 disk harrows, 442 fertilizer drills, 860 
manure spreaders ; 984 reports on spreading manure from a wagon box 
with a fork, 597 on spreading manure from piles with a fork, 765 
on loading, hauling, and dumping manure in piles, 973 on loading 
manure into spreader, 112 on spreading lime from piles, 119 on spread- 
ing lime from a wagon box, 480 on scooping grain into a wagon, 
1,014 on milking cows, 105 on picking strawberries, 626 on digging 
and picking up potatoes by hand, 110 on digging Irish potatoes with a 
an ordinary plow, 1,375 on picking up Irish potatoes after an ordinary 
plow, 429 on picking up Irish potatoes after an elevator digger, 38 
on digging sweet potatoes with a sweet-potato plow, 334 on hauling 
potatoes from field to cellar, 306 on planting Irish potatoes with a 
