DETERMIXIXG GEEASE AXD DIET IX WOOL, 



9 



Table 2. — Results of conditioning tvool samples — Continued, 

 c. PER CENT OF MOISTURE LOST. 





Sample 



No. 



■ 



Dried at 50° C. Dried at 100° C. 



Grade of sample. 



End 

 first 

 hour. 



End i End 

 second 1 third 

 hour. hour. 



End 

 third 

 hour. 



End 

 fourth 

 hour. 



End 

 fifth 

 hour. 



Idaho finft mpdinm 



10 

 11 

 12 



15 

 17 



Per cent. 

 29. 15 

 41.05 

 34. 19 

 32. 50 

 35. 93 



Per cent. ! Per cent. 

 43.22 ; .50.00 



Per cent. 

 82.76 

 88.16 

 83.44 

 91.81 

 91.22 



Per cent. 

 93.27 

 95.13 

 92.97 

 94.36 

 95. 28 



Per cent, 

 100 



Delame 



55.37 

 56.38 

 44.59 

 49.26 



61.58 

 56.02 

 51.57 

 56.21 



100 



Do 



lOO 



Idaho fine medium, very dirt v.. - 

 Do .■ ".... 



100 



100 







Table 2-c shows that conditionmg for three hours at 50° C. re- 

 moved from 50 per cent to 61.5 per cent of the moisture contained in 

 the air-dry wool tested. The calculations previously shown for the 

 theoretical cases of samples A and B are therefore in line with actual 

 tests sho\^Tl in Table 2. These results, therefore, form the basis for 

 the decision that conditioning wool samples at 50° C. for three hours 

 is sufficient to permit scouring experiments to be conducted within 

 reasonable limits of error. As sufficient accuracy is possible by con- 

 ditioning at 50° C. for three hours while moisture-free condition;ing 

 would recj^uire a great deal more l^ime and expense, all samples used 

 in the wool laboratory tests at Beltsville, Md., are conditioned for 

 three hours at 50° C. 



The same samples as were used for the tests reported in Table 1 

 were also dried at 80° C. and records kept of the percentages of loss in 

 moisture at the end of each hour for a period of three hours. All 

 percentages in regard to the less-moist samples are based on the air- 

 dry weights of the less-moist samples, and all percentages in regard 

 to the more-moist samples are based on the air-dry weights of the 

 more-moist samples. The results of this experiment are given in 

 Table 3. 



Table 3. — Wool samples with different amounts of moisture ^ weighed at end of each hour 

 while drying for a period of three hours at 80° C. 









^.i__. _.| ^.. 





. __,. 







<sam 





















a ; p. . ! P.2 



a§ 



ft § =. g -Eg ftS 



=< S 



ft" 5' ftg 



ftS 



"^"^ s 



"^ S 





s« 1 es ' BZ 



S-c 



Si?.^ S^^ e2 



■ 5.^5 





£1^5 a.c 



B^ 



St^^ 



HMja 





C3.I3 e3 bJO 1 C3 



cS^ 



S°- ^.2'^ 



gcq 



g!N 



^.2?^ 



fn°.^ 



03 CO 





S.2« 



<* °tn 



Sample. 



moist 

 dry wei 



-moist 

 r-dry wo 



moist 

 ght afto 



o 



si 



moist 



cent 

 sturc ill 

 moist 



coat 

 sture in 





3 



"m'S ? 

 3 





11 







aS 



a "S 



-^1 



V .2 









tfj >ri o o -s o 



iftS SftS 



Sl 





wo 2 



<2 5S m'o 



oftS S& 



^ 



i- ^ 



K-ftS 



ftS 





^ ; S \_y^ 



S 



-5 S 



J 



s 



hj 



S 



►J 



§ 



J 



s 





i 1 

 Gms. Gms. Gms. 



Gms. 



P.ct. P.ct. 



Gms. 



Gms. 



p.ct. 



P.ct. 



Gms. 



Gms. 



p.ct. 



p.ct. 



1 



267.3 2S5.4 257.7 



268.7 



3.59 5.85! 251.7 



260.7 



5.83 



8.65 



248.4 



257.7 



7.07 



9.71 



2 



267.7, 282.5 258.3 



267.1 



3.51 5.45I 252.7 260.2 



5.60 



7.89 



249.7 



255.5 



6.72 



9.56 



3 



269.6 2S4.1 259.3 

 269.2' 282.7 260.0 



269.2 

 268.3 



3.82 5.24 254.7 262.4 



5.52 

 5.42 



7.63^ 251.8 

 7.43 251.6 



257.8 

 257.2 



6.60 

 6.53 



9.25 



4 



3.41 5.09i 254.6 



261.7 



9.02 



5 



267.8 2S3.6 257.5 



266.8 



3.84 5.92; 252.1 



259.5 



5.86 



8.49 249.3 



2.54.9 



6.90 



10.12 



-6 



267.2 282.6 255.5 



264. 3 



4.37 6.47 249.5 



256.2 



6.62 



9.34 246.7 



252.0 



7.67 



10.82 



7 



265.9 281.0 253.5 



262.9 



4.66 6.44| 248.9 



255.6 



6.39 



9.04 245.7 



250.8 



7.59 



10.74 



8 



268. 9 282.3 2.57.5 

 269.3 284.0^ 257.4 



266.1 

 265.8 



4.23 5.73' 252.71 2,59.5 



6.02 

 6.31 



8.07 250.8 

 8.77j 249.1 



255.4 

 254.7 



6.73 

 7.50 



9.52 



9 



4.41 6.40, 252.3 



259.1 



10.31 







Average. . . 



26S.12S3.13 257.41 



266.57 



3.98 5.84 252.13 



259.4 



5.95 



8.37 



249.23 



255. 11 



7.03 



9.89 



111962— 22— Bull. 1100- 



