Letter, from William Derham [to the Royal Society], dated at Upminster Derham sends the two previous year's tables of meteorological observations of Upminster, Essex Derham discusses the rainfall for 1700 and 1701; whether the tables will be useful in judging health and diseases during those years; the different height of the mercury in the barometer during the summer and winter; the thermometrical observations of the coldest and hottest part of the day; the lowest descent of the mercury in the barometer; Richard Towneley's barometric observations for Townley, Lancashire. A small table is attached Read to the Royal Society on 15 April 1702 7 April 1702