DETERMINING GREASE AND DIRT IN WOOL, 



13 



by two; 14.78 by three; and 15.10 by four. This indicates that after 

 three treatments of gasoline the remaining grease is not sufficient to 

 cause any appreciable error, there being only 0.04 per cent removed 

 by the fourth treatment from the Rambouillet samples and 0.32 

 per cent from the crossbred. 



The results of three other runs of 20 samples each of Rambouillets 

 and crossbreds (based on the results of Table 5, which show that three 

 is the least number of treatments which can be used) show in Table 6 

 the amount of grease removed by each extraction above the third 

 until the samples are free from grease. 



Table 6. — Grease removed by gasoline treatments, conditioning after the third and after 



each succeeding treatment. 



RAMBOUILLET FLEECE SAMPLES. 



Sample No. 



Con- 

 ditioned 

 weight 

 of raw 

 wooL 

 (grams) . 



Cumulative weight 

 of grease re- 

 moved at treat- 

 ment (grams). 



Third. Fourth. 



Cumulative per 

 cent of grease re- 

 moved at treat- 

 ment. 



Third. Fourth. 



Per cent 

 grease 

 removed 

 by fourth 

 treat- 

 ment. 



Per cent 

 total 

 grease 

 removed 

 by three 

 treat- 

 ments. 



801 



U.S. 77 



1.303 



1305 



20.58 



2080 



2141 



2151 



2268 



2.353 



2356 



2366 



2413 



2.569 



2686 



2724 



2753 



2758 



2910 



2911 



588 ... 



1101 



1125 



1201 ■ 



1350 



1387 



1850 



2360 



2410 



2434 



2470 



2471 



2582 



2643 



2666 



2819 



2931 



2937 



2999 



3137 



594 



1089 



1122 



1177 



1205 



1336 



1345 



1630 



1823 



2068 



2194 



2343 



2548 



'See footnote 2 under Table 5 



239.8 

 233.6 

 242.4 

 24L0 

 235.7 

 239.9 

 2.37.4 

 236.6 

 238.6 

 236.4 

 239.3 

 240.6 

 239.1 

 23.5. 6 

 240.0 

 236.4 

 237.5 

 233.6 

 236.6 

 239.0 

 239.5 

 239.6 

 242.9 

 2.36.7 

 239.8 

 244.2 

 236.2 

 240.4 

 237.1 

 237.1 

 239.2 

 236.7 

 2.34.5 

 2.54. 2 

 239.3 

 239.2 

 23.5.1 

 235.3 

 234.6 

 230.4 

 239.5 

 237.6 

 2.31.4 

 236.8 

 235.3 

 238.9 

 242.2 

 238.3 

 239.9 

 253.3 

 238.4 

 240.3 

 237.9 



40.3 

 3.5.9 

 61.6 

 42.4 

 37.1 

 45.1 

 40.6 

 34.6 

 40.7 

 .37.6 

 54.9 

 42.6 

 49.6 

 28.5 

 40.8 

 37.9 

 27.9 

 23.0 

 35.2 

 29.2 

 44.3 

 32.1 

 42.3 

 44.5 

 51.7 

 44.0 

 34.7 

 46.8 

 40.5 

 29.3 

 34.2 

 41.0 

 28.1 

 47.3 

 37.3 

 53.7 

 26.1 

 35.1 

 28.5 

 30.3 

 29.7 

 32.7 

 30.0 

 40.5 

 33.2 

 32.1 

 45.9 

 52.5 

 63.5 

 50.7 

 40.4 

 41.8 

 35.7 



40.5 



135.6 



62.2 



42.7 



37.7 



45.4 



40.7 



34.6 



140.4 



137.3 



154.5 



45.0 



149.5 



127.2 



4L9 



38.1 



28.3 



24.7 



135.1 



29.7 



45.4 



32.6 



43.3 



46.5 



53.7 



45.1 



35.8 



48.0 



42.2 



30.5 



35.2 



41.3 



128.0 



47.8 



37.9 



54.0 



26.2 



135.0 



128.4 



130.2 



129.6 



132.5 



31.0 



40.9 



33.8 



32.8 



145.7 



54.0 



63.6 



50.7 



139.3 



141.6 



36.3 



16.81 

 15.36 

 25.41 

 17.59 

 15.74 

 18.79 

 17.1 

 14.62 

 17.05 

 1.5. 91 

 22.94 

 17.71 

 20.74 

 12.09 

 17.00 

 16.03 

 11.74 

 9.84 

 14.87 

 12.21 

 18.49 

 13: 39 

 17.41 

 18.80 

 21.55 

 18.01 

 14.69 

 19.46 

 17.08 

 12.35 

 14.29 

 17. .32 

 11.98 

 18.61 

 1.5.58 

 22.44 

 11.10 

 14.91 

 12.14 

 13. 15 

 12.40 

 13.76 

 12.96 

 17.10 

 14.11 

 13.43 

 18.95 

 22.03 

 26.46 

 20.01 

 16.94 

 17.39 

 15.01 



16. 8S 



115.23 



25.66 



17.71 



15. 99 



18.92 



17.14 



14.62 



1 16. 93 



1 15. 77 



1 22. 77 



18.70 



1 20. 70 



111.54 



17.45 



16.11 



11.91 



10.57 



1 14.83 



12.42 



18.95 



13. 61 



17.82 



19.64 



22. 39 



18.46 



15.15 



19.96 



17.79 



12.86 



14.71 



17.44 



1 11.94 



18.80 



15.83 



22.57 



11.14 



1 14. 87 



12.11 



13.11 



1 12. 35 



1 13. 67 



13.39 



17.27 



14.36 



13.72 



1 18.86 



22.66 



26.51 



20.01 



1 16. 48 



1 17.31 



15.25 



-0.07 



1 -.13 



.25 



.12 



.25 



.13 



.04 



.00 



1 - .12 



1 - .14 



1 - .17 



.99 



1 -.04 



I -.55 



.45 



.08 



.17 



.73 



I -.04 



.21 



.46 



.22 



.41 



.84 



.84 



.45 



.46 



.50 



.71 



.51 



.42 



.12 



1 -.04 



.19 



.25 



.13 



.04 



1 -.04 



1 -.03 



1 -.04 



1 -.05 



1 -.09 



.43 



.17 



.25 



.29 



1 -.09 



.63 



.05 



.00 



1 -.46 



1 -.08 



.24 



99. 51 



1 100. 84 



99.03 



99.29 



98.41 



99. 33 



99.75 



100. 00 



1 100. 74 



1 100. 80 



1 100. 73 



94.66 



1 100. 20 



1 104. 77 



97.37 



99.47 



98.58 



93. Jl 



1 100. 28 



98.31 



97.57 



98.46 



97.69 



95.69 



96.27 



97.56 



96.92 



97.50 



95.97 



96.06 



97.15 



99.27 



1 100. 35 



98.95 



98.41 



99.44 



99.61 



1 100. 28 



1 100. 35 



1 100. 33 



1 100. 33 



1 100. 61 



96.77 



99.02 



98.22 



97.86 



1 100. 43 



97.22 



99.84 



100.00 



1 102. 79 



1 100. 48 



98.34 



