Paper, 'Concerning the causes of the general trade winds' by George Hadley Hadley writes that 'the causes of the general trade-winds have not been fully explained by any of those who have wrote on that subject'. He links the trade winds to the diurnal motion of the Earth. Subject: Meteorology Read to the Royal Society on 22 May 1735 Published in Philosophical Transactions as 'Concerning the cause of the general trade-winds' 1735