' of Copper and Tin. 



^K 



Order 



"f Characteristic Properties, in Working, &c. 

 usibi 

 lity. 



No 

 Zn, as is 



Relation to Cast 



Iron, In Presence 



of a Solvent, i. e. 



Sea Water. 



Similar he, 



Several of these 

 are malleable at 

 higli temperatures. 



Bath Metal. 

 Dutch Brass. 

 Rolled Sheet Brass. 

 British Brass. 

 German Brass. 



„ Brass, Watchmakers. 



Very Brittle, 



Very Brittle, 



Very Brittle, 



Brittle, 



Brittle, 



Very Brittle, J 



Barely malleable. 



Brittle. 



White Button Metal. 



Brittle. 



Brittle, well knovfn. 



Too hard to file or 

 turn, lustre nearly 

 equal to Speculum 

 Metal. 



Well known. 

 Gun Metal, &c. 

 Gun Metal, &c. 

 Gun Metal and Bronze. 

 Hard Mill Brasses, &c. 



All these alloys 

 found occasionally 

 in bells, with mix- 

 tures, of Zn. and 

 Pb. 



Brittle, 

 Brittle, 

 Crumbles, 

 Crumbles, 

 Brittle, 

 Small bells, Brittle. 

 ,, Brittle. 



Speculum Metal of authors. 



„ Files, tough. 



„ Files, soft and tough 



Well known. 



14 



i 11 



« = '^ 



<u .2 i^ 



(O ^ o 

 ill 



> = gs 



ffl .2 « 



QJ O ^ 

 S t « 



.s s- 



+ ■ 





ic Fibrous, C. Conchoidal, V.C. Vitreo-Conchoidal, V. Vitreous, 



Abbic' 

 E. Earthy. 

 The m 

 Them 

 The at 

 Thcsf 



before disn '^■*>" ^^^ those which each prism just sustained for a few sccondt 



The CO 

 by oxidatio >">waU. They were alloyed in a peculiar apparatus, to avoid loss 



rd fusible metal, generally Cu. ^■ Zn. + Ph. ; or Cu. -{' Sn. + 

 [Pkoceedings R. I. A., vol. ii. p, W. 



