of the New Zealand Company on the ship Tory on 20 September 1839, followed by 150 settlers on the Aurora on 22 January 1840. Thus the Wellington settlement preceded the signing of the Treaty of Waitangi (on 6 February 1840). The 1840 settlers constructed their first homes at Petone (which they called Britannia for a time) on the flat area at the mouth of the Hutt River. Within months that area proved swampy and flood-prone, and most of the newcomers transplanted their settlement across Wellington Harbour to Thorndon in the present-day site of Wellington city. National capital Wellington was declared a city in 1840, and was chosen to be the capital city of New Zealand in 1865. Wellington became the capital city in place of Auckland, which William Hobson had made the capital in 1841. The New Zealand Parliament had first met in Wellington on 7 July 1862, on a temporary basis; in November 1863, the Prime Minister of New Zealand, Alfred Domett, placed a resolution before Parliament in Auckland that "... it has become necessary that the seat of government ... should be transferred to some suitable locality in Cook Strait [region]." There had been some concerns that the more populous South Island (where the goldfields were located) would choose to form a separate colony in the British Empire. Several commissioners (delegates) invited from Australia, chosen for their neutral status, declared that the city was a suitable location because of its central location in New Zealand and its good harbour; it was believed that the whole Royal Navy fleet could fit into the harbour. Wellington's status as capital is a result of constitutional convention rather than statute. Wellington is New Zealand's political centre, housing the nation's major government institutions. The New Zealand Parliament relocated to the new capital city, having spent the first ten years of its existence in Auckland. A session of parliament officially met in the capital for the first time on 26 July 1865. At that time, the population of Wellington was just 4,900. The Government Buildings were constructed at Lambton Quay in 1876. The site housed the original government departments in New Zealand. The public service rapidly expanded beyond the capacity of the building, with the first department leaving shortly after it was opened; by 1975 only the Education Department remained, and by 1990 the building was empty. The capital city is also the location