#3. The Northern Territory.#--In 1864 the Northern Territory was added to the dominion of South Australia, and from Adelaide an expedition was despatched by sea to the shores of Van Diemen's Gulf, in order to form a new settlement. After many difficulties, caused chiefly by the disputes between the first Government Resident, or Superintendent, and the officers under him, a branch colony was successfully founded at Port Darwin, opposite to Melville Island. This settlement has become a prosperous one: all the fruits and grains of tropical countries flourish and thrive to perfection; gold has been discovered; and it is asserted that there exist in the neighbourhood rich mines of other metals, which will, in the future, yield great wealth, while the stations that are now being formed are peculiarly favourable to the rearing of cattle and of horses. Yet the number of people who settle there continues small on account of the very hot climate; Palmerston, the capital, is as yet a town of only a few hundred inhabitants, and all the really hard work of the district is done by Chinese. #4. Overland Telegraph.#--In a previous chapter it has been described how M'Douall Stuart, after two unsuccessful efforts, managed to cross the continent from Adelaide to Van Diemen's Gulf. Along the route which he then took, the people of South Australia resolved to construct a telegraph line. A gentleman named Charles Todd had frequently urged the desirability of such a line, and in 1869 his representations led to the formation of the British Australian Telegraph Company, which engaged to lay a submarine cable from Singapore to Van Diemen's Gulf, whilst the South Australian Government pledged itself to connect Port Darwin with Adelaide by an overland line, and undertook to have the work finished by the 1st of January, 1872. Mr. Todd was appointed superintendent, and divided the whole length into three sections, reserving the central portion for his own immediate direction, and entrusting the sections at the two ends to contractors. It was a daring undertaking for so young a colony. For thirteen hundred miles the line would have to be carried through country which never before had been traversed by any white men but Stuart's party. Great tracts of this land were utterly destitute of trees, and all the posts required for the line had to be carted through rocky deserts and over treacherous sand-hills. Todd had, with wonderful skill and energy, completed his difficult portion of the task, and the part nearest to Adelaide had also been finished before the time agreed upon; but it fared differently with those who had undertaken to construct the northern section. Their horses died, their provisions failed, and the whole attempt proved a miserable collapse. The Government sent a party to the north, in order to make a fresh effort. Wells were dug, at intervals, along the route, and great teams of bullocks were employed to carry the necessary provisions and materials