Startling as the subject of connecting China and New South Wales with Great Britain, through the West Indies, may at first sight appear, both as regards time and expense, still few things are more practicable. The labour and expense of crossing the Isthmus of America, either by Panama or by Lake Nicaragua, by a land conveyance, is trifling. With eight steam-boats, ONLY FOUR ADDITIONAL to the number already in the West Indies, added to the present sailing-packet establishment, the whole Plan for the Western World, extending it westward to China and New South Wales, can, in the mean time, as the following pages will show you, be put into execution to the fullest extent, with a very great saving in time, and with very great regularity.