RESULTS ON COMMERCIAL SAMPLES. 



41 



< f S'S" 



00 I-H O O ~4 i-H i-l t() 10 C3 I-H * O 



ITJ. ooeo^HO 



rt< OO O5O O CONOCO OCO OCO O Wt^WO iOOOQOO 



g g SiSSS Sg SS 



SM 



II 



O"" 



i 



9 S $8 S SiS? 2 52S! 88 ^ o o o ggo? 





^H iOiO*pt^-CT5OCOJ'-f > - 



ft Q< ^- CW 3 ^ W a; CX o ^ 



1 3 .i^ji -g. ill's, 



c-- b arSbo^owgs 1 ". 

 lacol^SS^ |s ^| I"!'-! 



HO DJ^C&PH P-.^HHH^'' 



S ^ J *^ 





S 

 3 



B -^ tr 



5 :l I 



^ \~5 o 



a : s -5 



a jSlu 



iri^ 



fU I^ PH 



- 



a 2= -a .3 



5^<i H \x 



c 



111 



888 



= = 







333 





.2 .22 .2 



QQQ 



. ^^ ^ ^^ s^ ^^ ^^ 

 : o :S : : :l :i 



