Sentence:  Some time before 1847 the river threw up in its main and navigable channel certain islands or <WSD>"churs</WSD>", of which it is only necessary to specify two, "viz.", <WSD>Chur</WSD> Durmeean and <WSD>Chur</WSD> Dukhin. ... [F]or the purposes of this litigation, it must be assumed that the <WSD>"churs</WSD>" in question were the property of the Government, and were duly granted to and settled with the respondents. ... Before the end of 1852 the river had swept away the whole of <WSD>Chur</WSD> Durmeean, but had formed another low <WSD>"chur</WSD>" in the vicinity of its site. 
Meaning of the word marked with <WSD> tags:  An island or shoal in a river.