DETERMINING GEEASE AND DIET IN WOOL. ' 7 



One hundred grams of such conditioned wool would have : 



Grams. 

 Moisture — q^ — = b. 59 



Grease — qt — =21.98 



T^- . 100X40 



Dirt — qt — =43.96 



Clean wool - ^0^5^27.47 



Total ^ 100 



.„^^ 21.98 (grams of grease) arx rv-i ■ ^ 



100 X ^- ■- )r ^-T^ Sn =80- 01^ grease mdex. 



27. 47 (grams ol 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. 



\t • ^ 100 X 5 _ -. 



Moisture — qc — = 5. 26 



Grease ~~q^ — =21. 05 



Dirt ^^=47-37 



ni 1 100X25 „^ __ 



Clean wool — ^ — =26.32 



Total 100 



-„^_21.05 (grams of grease) «^ ^o ■ ^ 



100 x „„ oo / ^^r^ ^-N=79. 98, grease mdex. 



26. 32 (grams ol 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 — 79.98 = 0.03. 



Table 1 shows results from nine samples, A-1 to A-9. The air-dry 

 weights of these samples were taken on a comparatively dry day and 

 conditioned for three hours at 50° C. These same samples were ex- 

 posed in a moist room and again conditioned for three hours at 50° C. 

 They are designated in the table as B-1 to B-9. All weights are given 

 in terms of grams. 



