432 



The Zinc-end. About 12 grms. were taken, the zinc partly dis- 

 solved out by dilute hydrochloric acid, the residue dissolved in nitric 

 acid, and precipitated by ammonia and carbonate of ammonia : the 

 bismuth was weighed as oxide. 



Analyses of the Bismuth- sine Alloys. 



Bismuth 50 per cent, and zinc 50 per cent. 



Taken. 



Found. 



Per-centage. 



Zinc-end 15-520 grms. 0-420 BiO 3 2-42 Bi 



Zinc-end 13-990 0-386 2-48 



Bismuth-end 8-000 1-385 13-85 Zn 



Bismuth 50 per cent., and zinc 50 per cent. 



Zinc-end 14-2042 grms. 0-3784 BiO 3 2-39 Bi 



Bismuth-end ... 3-5060 0-3795 ZnO 8-65 Zn 



Bismuth 80 per cent., and zinc 20 per cent. 



Top 2-990 grms. 0-525 ZnO 14-0 Zn 



*Top 3-0096 0-5295 14-1 



Bottom 3-694 0-597 12-93 



*Bottom 2-9758 0-4885 13-1 



Bismuth 80 per cent., and zinc 20 per cent. 



*Top 2-5542 grms. 0-5208 ZnO 16-3 Zn 



*Bottom 2-5356 0-4206 13-3 



Bismuth 80 per cent., and zinc 20 per cent. 



*Top 2-5778 grras. 0-4548 ZnO 14-1 Zn 



*Bottom 2-5757 0-2830 8-8 



Bismuth 5 per cent., and zinc 95 per cent. 



Top 13-230 grms. 0-351 BiO 3 2-38 Bi 



Bottom 16-050 0-430 2-40 



From the foregoing analyses, it appears that lead will, under the 

 conditions detailed above, dissolve only 1*6 per cent, zinc, and zinc 

 1*2 per cent, lead; that zinc will only dissolve 2*4 per cent., bismuth 

 8-6-14-3 per cent. 



If we now take equal parts of lead and zinc, fuse them together, 

 stir them well, and cool the alloy rapidly, we may regard such an 

 alloy as a mechanical mixture of solutions of 1'2 per cent, lead in 



