f of Copper und Tin. 



Order 



of 

 fusibi- 

 lity. 



Characteristic Properties, in Working, &c. 



14 



Relation to Cast 



Iron, in Presence 



of a Solvent, i. e. 



Sea Water. 



Well known. 



Similar &c., 



Several of these 

 are malleable at 

 high temperatures. 



Bath Metal. 

 Dutch Brass. 

 Rolled Sheet Brass. 

 British Brass. 

 German Brass. 



„ Brass, Watchmakers. 



Very Brittle, , 



Very Brittle, Too hard to file or 

 Very Brittle, I turn, lustre nearly 

 Brittle, | equal to Speculum 



Brittle, Metal. 



Very Brittle, J 

 Barely malleable. 

 Brittle. 



White Button Metal. 

 Brittle. 

 Brittle, well known. 



Well known. 



Gun Metal, &c. 



Gun Metal, &c. 



Gun Metal and Bronze 



Hard Mill Brasses, &c 



Brittle, 



Brittle, 



Crumbles, 

 Crumbles, 

 Brittle, 

 Small bells 



1 All these alloys 

 found occasionally 

 }. in bells, with mix- 

 I tures, of Zn. and 

 Pb. 



Brittle. 

 ,, Brittle. 



Speculum Metal of authors. 

 „ Files, tough. 



„ Files, soft and tough. 



Well known. 



"1 "■ 



oj eu 



o ■JJ 



< :S' 



.S ^- 



+ ' 



^ > ' 



E Earthy. W Fibrous, C. Conchoidal, V.C. Vitreo-Conchoidal, V. Vitreous, 

 The mi 

 Thenu 

 Theatc 

 The spi 



before disru '^^" ^^^ those which each prism just sustained for a few seconds 

 by oxidatio; 'mwall. They were alloyed in a peculiar apparatus, to avoid loss 

 Zn. as is kr '^^ fusible metal, generally Cu. + Zn. + Pb. ; or Cu. ■\- Sn. + 

 [Pboceedings R. I. A., vol. ii. p, 95. 



