DETERMINING GREASE A.\h DIRT IN WOOL. 7 
One hundred grams of such conditioned wool would have: 
Grams. 
Moisture T= 6 - 59 
Grease ^0=21.98 
Mrt ^P=43.96 
Clean wool ,n " L 5 V r 
9] 
Total 100 
, no 2L_98Jgramsof grease) OA 
iuux /^^^ — j i Sr =80. 01, grease index. 
27.4/ (grams oi clean wool) 
Sample B, 50 per cent of 10 grams moisture removed equals 5 
grams, leaving a remainder of 5 grams. 
Grams. 
Moisture 5 
Grease 20 
Dirt 45 
Clean wool 25 
Total weight of conditioned wool 95 
One hundred grams of such conditioned wool would have — 
Grams. 
Moisture ^^-= 52r > 
Grease T= 2105 
Dirt ™£*-47.37 
95 
Clean wool 100 * 25 =26. 32 
95 
Total 100 
1Ark »21.05 (grams of grease) _ __, , 
100 X og 00 ; fe ^^ ' =79. 98, grease index. 
26. 32 (grams of clean wool) ' & 
Even though there is a difference of 5 per cent in the moisture of 
sample A as compared with sample B, the grease, index is not changed 
appreciably, the difference here shown being 80.01 —79. 9S = 0.03. 
Table 1 shows results from nine samples, A-l to A-9. The air-dry 
weights of these samples were taken on a comparative!}' dry day a.nd 
conditioned for three hours at 50° C. These same sample- were ex- 
posed in a moist room and again conditioned for three horns at 50° C. 
They are designated in the table as B-l to B-9. All weights are given 
in terms of grams. 
