86 Zirconium and its Atomic Weight. [May 9, 



Mats WeibulVs Determinations . 



Zr(S0 4 ) 2 . 



Zr0 2 . 



Zr0 2 

 Zr(S0 4 ) 2 ' 



1 '5499 grams. 



1 *IZA A K 



1 O^hO „ 



2-1683 „ 

 1 -0840 „ 

 0-7913 „ 

 -6251 „ 

 -4704 „ 



0-6684 gram. 



U OCOO „ 



-9360 „ 

 -4670 „ 

 -3422 „ 

 -2695 „ 

 0-2027 „ 



43 -126 per cent. 



43 "153 



43 -168 



43-081 



43 -321 



43 -113 



43 091 



Total . . 8 "2335 grams. 



3-5523 grams. 



43 "146 per cent. 



Mean determination : — 



Zr : : : 5*592 : 1 

 Zr : H : : 89 255 : 1 



My own Determinations. 



Zr(S0 4 ) 2 . 



Zr0 2 . 



Zr0 2 

 Zr(S0 4 ) 2 ' 



2 -02357 grams. 

 2 -6185 



2 -27709 grams. 

 2 -21645 „ 



1 -75358 grams. 



1 '64065 „ 



2 -33255 grams. 

 1 -81105 „ 



Portion A. 



-87785 gram. 

 1-1354 



Portion B. 



-98713 gram. 

 0-96152 „ 



Portion C. 



0-76107 gram. 



-7120 



Portion D. 



1 -01143 grams. 

 0-78485 „ 



43 -381 per cent. 

 43 -360 



43 -350 per cent. 

 43 -385 



43 -4016 per cent. 

 43 -397 



43 -361 per cent. 

 43 -337 



Totals . . 16 • 67344 grams. 



7 -23125 grams. 



43 -37 per cent. 



Maximum Zr : : : 5'674 



Zr : H : : 90'559 



Minimum Zr : O : : 5'654 



Zr : H : : 90'237 



Mean Zr : O : : 5'664 



Zr : H : : 90-401 



