to the Estimation of Arsenic, etc. 



403 



in the usual manner. The results of the determinations are 

 recorded in Table IV. 









Table 



IV. 



Vol. 









Sn 







of 



Sn 







taken 



K 3 Fe0 6 N 6 



KOH 



sol. 



found 



Error 





grm. 



grin. 



grm. 



cm 3 



grm. 



grm. 



(1) 



0-1032 



25 



6 



65 



0-1033 



+ 0-0001 



(2) 



0-1022 



2-5 



6 



65 



0-1016 



— 0-0006 



(3) 



0-1029 



3- 



1 



60 



0-1030 



+ 0-0001 



(4) 



0-1009 



5- 



6 



85 



0-1011 



+ 0-0002 



(5) 



0-1005 



5- 



5 



60 



0-1010 



+ 0-0005 



(6) 



0-1011 



10- 



5 



85 



0-1015 



+ 0-0004 



(?) 



0-0995 



10- 



5 



85 



0-1004 



+ 0-0009 



(8) 



0-2020 



4- 



6 



80 



0-2019 



-0-0001 



(9) 



0-2003 



5- 



6 



90 



0-1998 



— 0-0005 



(10) 



0-2021 



10- 



5 



85 



0-2027 



+ 0-0006 



