on some ancient metallic Arms and Utensils. 425 
11. I conclude that these metal instruments contain tin; 
which metal was made appear, by the experiments on the white 
deposit afforded on dissolution in nitric acid, § 5 : and which 
also was made appear by the synthetic experiments, § 6. 
hi. The third conclusion is, that these metallic instruments 
consist of metal only, or at least of nothing else which can be 
detected by ordinary known modes of analysis : for they are 
all malleable, and uniform in their texture ; which properties 
metals do not possess when they are mixed by fusion with ex- 
traneous substances hitherto discovered by analysis ; except 
carbon in several metals, and siderite in iron only. 
iv. The fourth conclusion is, that these ancient instruments 
contain none of the metals but copper and tin : for, 
1. They do not contain gold , silver , or platina , excepting 
silver in the spear-head, as appears from the experiment of 
cupellation, § 4. ( e ). 
2. They do not contain lead, for that would have oozed out 
in the experiments of fusion and oxidation ; and would have 
appeared in the grain of the fractures ; as well as on adding 
muriate of soda, and muriatic acid, to the concentrated nitrate 
solution, § 5. (d). 
3. They do not contain iron, for that would have been shown 
by the prussiate of soda, § 5. (d) ; as was proved by the syn- 
thetical experiment, § 6. Exper. 17. (6). 
4. They do not contain zinc, for that would have been shown 
by the blue flame and white flowers in Exper. § 4. ( c ) ( d) ; as 
well as by the yellow colour of the grain of the fracture, which 
was shown by the synthetical experiments, §6. Exper. 13, and 14. 
5. Bismuth would have appeared on diluting the nitrate so- 
lution, §5. (d). 
3I 2 
