10 BULLETIN 591, U. S. DEPARTMENT OF AGRICULTURE. 
WASTE PERCENTAGES. 
Table IV gives the results of the waste determinations as found in 
the textile-school tests. These figures were computed in the same 
manner as those in Table II. Net weights were used in making cal- 
culations, the tare not being included. Since approximately 50 
pounds from each bale were used in the textile-school tests, the num- 
ber of different bales of each grade represented is shown by the total 
weight given for each grade. The waste percentages of the five 
grades from the different zones are placed side by side in order to 
facilitate comparison. 
——— WESTERN PRAIRIE LANDS| & PLATEAU —>-~ 
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— 
ATLANTIC COASTAL PLAINS Speer | <PIEDMONT 
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, 2 WESTERN GULF COASTAL PLAINS 
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oa GULF COASTAL PLAINS 
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KIFD OF STOCK MF. 
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ATLANTIC 
COASTAL PLAIIS 
EASTERN GULF 
COASTAL PLAINS 
COASTAL PLAINS 
| WESTERN PRAIRIE 
LANDS & PLATEAU 
Fic.5.—The visible waste percentages of five grades of cotton from the different zones. (Textile school 
tests.) 
A close analysis of these percentages shows that the waste has a 
consistent relationship to the grade of the cotton. The percentages 
of invisible waste, however, are neither as uniform nor as consistent 
as are the percentages of visible waste. (See discussion of Moisture, 
page —.) 
Figure 5 represents graphically the percentages of visible waste in 
the cotton originating from each of the five zones and of the five 
grades tested from each zone. Figure 6 likewise represents the per- 
centages of visible and invisible waste combined. There is rela- 
tively little variation between the percentages of waste in cotton of 
the same grade:-from the different zones. 
The average percentages of total waste from the five grades from the 
Piedmont Plateau, Atlantic Coastal Plains, eastern Gulf Coastal Plains, 
