At the time I undertook my first expedition in 1872, this extensive work had just been completed, and it may be said to divide the continent into halves, which, for the purpose I then had in view, might be termed the explored and the unexplored halves. For several years previous to my taking the field, I had desired to be the first to penetrate into this unknown region, where, for a thousand miles in a straight line, no white man's foot had ever wandered, or, if it had, its owner had never brought it back, nor told the tale. I had ever been a delighted student of the narratives of voyages and discoveries, from Robinson Crusoe to Anson and Cook, and the exploits on land in the brilliant accounts given by Sturt, Mitchell, Eyre, Grey, Leichhardt, and Kennedy, constantly excited my imagination, as my own travels may do that of future rovers, and continually spurred me on to emulate them in the pursuit they had so eminently graced. My object, as indeed had been Leichhardt's, was to force my way across the thousand miles that lay untrodden and unknown, between the South Australian telegraph line and the settlements upon the Swan River. What hopes I formed, what aspirations came of what might be my fortune, for I trust it will be believed that an explorer may be an imaginative as well as a practical creature, to discover in that unknown space. Here let me remark that the exploration of 1000 miles in Australia is equal to 10,000 in any other part of the earth's surface, always excepting Arctic and Antarctic travels.