Haast returned to Nelson on 24 September 1859 and met up with Hochstetter, whose time in New Zealand was drawing to a close. Hochstetter delivered a public lecture, which included both his and Haast's geological findings, and his conclusion that the minerals in the area would contribute significantly to the wealth of the region was well received by the interested citizens of Nelson. One final common expedition at the end of September investigated a newly discovered coalfield in Golden Bay; Hochstetter then sailed for Sydney on 2 October.