The year 2007 marked the centenary of the death of Dmitri Mendeleev (1834–1907). This article discusses how he and some of his predecessors accommodated the platinum group metals (pgms) in the Periodic Table, and it considers the placing of their three transuranic congeners: hassium ( 108 Hs), meitnerium ( 109 Mt) and darmstadtium ( 110 Ds). Over twenty-five years ago McDonald and Hunt () wrote an excellent account of the pgms in their periodic context. This account is indebted to that work. The present article introduces new perspectives and shows some of the relevant tables. There are good books on the history of the Periodic Table, e.g. (, ) and other texts (, ) which provide a fuller picture than it is possible to give here.