Referee's report by George Biddell Airy, on a paper 'On the deflection of the plumb-line in India, caused by the attraction of the Himalaya mountains and of the elevated regions beyond; and its modification by the compensating effect of a deficiency of matter below the mountain mass' by John Henry Pratt Recommended for publication in Philosophical Transactions. The paper 'seems to form a good sequence in a series of proceeding papers on the disturbance produced by the Indian mountains'. Subject: Geology [Published in Philosophical Transactions, 1859]. 21 December 1858