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190 Power of Heat," "On the Dynamical Theory of Heat," and numerous others are to be found in the Transactions of the Royal Societies of London and Edinburgh. His papers began to appear in book form in 1882.

In 1851 he was elected F.R.S. (along with Huxley and Stokes), and, after having received the Royal and Copley medals, he was in 1890 chosen President of the Royal Society. He was one of the eight foreign associates of the Académic des Sciences; D.C.L. of Oxford, and LL.D. of Cambridge, Edinburgh, and Dublin Universities; and he possessed most of the honours awarded to men of science.

Lord Kelvin was twice married. His first wife, the daughter of Mr Crum, F.R.S., died in 1870, and his second wife was the daughter of the late Mr Blandy of Madeira. For many years Lady Kelvin was his companion and helper; and they sailed in their yacht the Lalla Rookh over many seas, for Lord Kelvin was a navigator as well as a physicist and mathematician.

In 1892 he was made a peer of the realm by Queen Victoria. He was a Knight of the Prussian Order Pour le Mérite, a Grand Officer of the Legion d'Honneur de France, a Commander of the Order of Leopold of Belgium, a Grand Cross of the Victorian Order, a Member of the Order of Merit, etc. As Lord Kelvin left no heir the barony became extinct.