On the alleged correspondence of the rainfall at Madras with the sun-spot period , (reprinted from the Proceedings of the Royal Society, No.181, 1877).
Annual addresses on the progress of geography from 1886-7 to 1888-9 , (reprinted from the Proceedings of the Royal Geographical Society and monthly record of geography).
On the computation of the harmonic components of a series representing a phenomenon recurring in daily and yearly periods (from the Proceedings of the Royal Society, Vol.42).
On the probable effect of the limitation of the number of ordinary fellows elected into the Royal Society to fifteen , (from the Proceedings of the Royal Society, Vol.51).