on some ancient metallic Arms and Utensils . 449 
nothing but carbon and sulphate of iron, in about the same 
proportions as the dissolution of the sword, fig. 1. 
( e ) A black spot was produced by wetting this instrument 
with nitric acid. 
iv. The Sword, fig. 3. Tab. XI. (a) The hilt being po- 
lished, it appeared like steel. It was almost as hard as com- 
mon hardened steel, and as malleable. 
(6) The hilt was very malleable in its ignited state. It was 
hardened, but not considerably, by quenching in cold water 
when white hot. It was rendered softer, after being hardened, 
by ignition and gradually cooling. 
( c ) The specific gravity of the hilt was 7,647 : and after ig- 
nition and quenching, it was 7,427. 
( d ) The nitric acid produced black spots when applied to 
the polished surfaces of this metal. 
( e ) The dissolution in sulphuric acid and water afforded 
nothing but carbon, and sulphate of iron. The carbon was in 
smaller quantity from this hilt, than from the sword, fig. 1. 
and not more than from common steel. 
§ 3. Conclusions and Remarks. 
1. It appears that all these instruments are of steel ; because 
they consist of carbon and iron, § 2. 1. ( d ) ( e ) ; 11. ( d ) (^) ; 
hi. (d) ( e ) ; iv. ( d ) ( e ) ; because they are capable of indura- 
tion by plunging them when ignited in a cold medium, § 2. 
n (6); 11.(6); hi. (6) ; iv.(6); and they are softened by ig- 
nition and gradual cooling (ibid.)— they have the colour, tex- 
ture, hardness, brittleness, § 2. 1. ( a ) ; 11. ( a ) ; hi. (a) ; iv. 
(а) ; malleability when ignited, § 2. 1. (6) ; 11. ( a ) (6) ; in. 
(б) ; iv. (6) ; and specific gravity of many sorts of steel, § 2. 1. 
( c ); 11. ( c ) ; hi. {c ) ; iv. (c). 
3 M 2 
