Celsius that used this scale. In 1744, coincident with the death of Anders Celsius, the Swedish botanist Carl Linnaeus (1707–1778) reversed Celsius's scale. His custom-made "linnaeus-thermometer", for use in his greenhouses, was made by Daniel Ekström, Sweden's leading maker of scientific instruments at the time, whose workshop was located in the basement of the Stockholm observatory. As often happened in this age before modern communications, numerous physicists, scientists, and instrument makers are credited with having independently developed this same scale; among them were Pehr Elvius, the secretary of the Royal Swedish Academy of Sciences (which had an instrument workshop) and with
David Kennedy (astronomer) he was the provincial superior of the Society of Mary in New Zealand. He died in Wellington on 10 March 1936. David Kennedy (astronomer) David Kennedy (27 April 1864 – 10 March 1936) was born at Lyttelton, New Zealand, the son of an Irish mother and a Scottish father who came to New Zealand from Melbourne in 1863. He became the first New Zealand born priest of the Society of Mary (Marists), a noted astronomer and educator. As a boy he showed a keen interest in both theology and science. Because of his undoubted intelligence and promise he was sent