As soon as we returned to Chelsea, the “Connexion of the Physical Sciences” was published. It was dedicated to Queen Adelaide, who thanked me for it at a drawing-room. Some time after Somerville and I went to Scotland; we had travelled all night in the mail coach, and when it became light, a gentleman who was in the carriage said to Somerville, “Is not the lady opposite to me Mrs. Somerville, whose bust I saw at Chantrey's?” The gentleman was Mr. Sopwith, of Newcastle-on-Tyne, a civil and mining engineer. He was distinguished for scientific knowledge, and had been in London to give information to a parliamentary committee. He travelled faster than we did, and when we arrived at Newcastle he was waiting to take us to his house, where we were hospitably received by Mrs. Sopwith. His conversation was highly interesting, and to him I was indebted for much information on mining generally, and on the mineral wealth of Great Britain, while writing on Physical Geography. Many years after he and Mrs. Sopwith came and saw me at Naples, which gave me much pleasure. He was unlike any other traveller I ever met with, so profound and original were his observations on all he saw.