118 
Action of 200 Litres of Sea Water upon 1 Square Metre 
Surface of the following Brasses : 
Composition of the Brasses. 
Pure Copper ... 50 
Pure Zinc 50 
100 
Quantity of Metals Dissolved. 
IRON. COPPER. ZINC. TOTAL. 
1*110 10*537 11*647 
Commercial Brass : 
Copper 66* 
Zinc 32*5 
Iron and Lead 1 *5 
■ 0*579 3*667 3*324 7*570 
100 
Muntz Metal (Sheet) : 
Copper 70* 
Zinc... 29*2 
Iron and Lead 0 *8 
— 0*438 4*226 2*721 7*385 
100*0 
Muntz Metal (Bars) : 
Copper 62 
Zinc 37 
Lead and Iron 1 
0*501 2*697 3*493 6*691 
100*0 
Prepared Brass : 
Copper 50 
Zinc 48 
Tin 2 tin. 
— 0*365 7*04 3*477 10*882 
100 
