118 
Action op 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 32A 
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 
