EXPLANATIOX OF PLATP: XX. 



William Branwliite Clarke — " Fathe!- of Australian Geolo-ry " ; 

 Rector of Willou<?1ibv, 184.6-1870; Secretary (1836?), 

 1839-1841 ; Secretary aii.l Curator, July, 1841-1842 ; 

 Committeeman, 1838-1853 ; Elective Trustee, 1853-1874. 



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