George Windsor Earl the Physical Geography of South-Eastern Asia and Australia", published in 1845, described how shallow seas connected islands on the west (Sumatra, Java, etc.) with the Asian continent and with similar wildlife, and islands on the east such as New Guinea were connected to Australia and were characterised by the presence of marsupials. This formed the insipiration for Alfred Russel Wallace to propose the faunal boundary line now known as the Wallace Line. He published a paper in 1850 that invented the term 'Indu-nesians', for a quaint racial classification, derived from the Latin for India and island. He published a seminal
Wallace, Idaho The former NP line was abandoned and removed between St. Regis and Mullan in 1980. Union Pacific continued operating the Wallace-Mullan segment of the NP line until abandoning the entire Plummer-Mullan route in 1992. After abandonment, this segment of former UP and NP lines was developed into the Trail of the Coeur d'Alenes. This trail runs from east of Mullan, through Wallace, to the Washington-Idaho state line west of Plummer. Several miles to the south, the Chicago, Milwaukee, St. Paul and Pacific Railroad, commonly called the Milwaukee Road, ran transcontinental passenger trains between Chicago and Seattle from 1911 to 1961,