Smithsonian Report, 1963. — Gettens 



PLATE 1 



Chinese bronze ceremonial vessel of llie type ting. Shang Dynasty. From long burial this 

 ancient bronze has been almost completely altered to mineral products of copper, tin 

 and lead, similar to the ore minerals from which those metals were original!}' derived. 

 Courtesy Royal Ontario Museum (Menzies Collection), Toronto. 



