OULESS, W., paints Darwin's portrait.
OWEN, Sir R., criticises Darwin's theory. Contradicted by Huxley. His views on variation by descent.
PALEY's argument of design in nature no longer good. His 'Natural Theology' mentioned.
PAMPAEAN FORMATION, Darwin on.
PANGENESIS, hypothesis of. Opinions on. Anticipated by Hippocrates.
PARKER, Henry, defends the 'Fertilisation of Orchids.'
PARSONS, Theophilus, reviews the 'Origin of Species.'
PEACOCK, George, letter on appointment of naturalist to "Beagle". Letter from, appointing Darwin to "Beagle".
PENGELLY, William, mentioned.
PERTHES, Boucher de, Darwin on.
PETRELS as agents of distribution.
PHILLIPS, John, mentioned.
PHILOSOPHICAL CLUB, its nature.
'PHILOSOPHIE ZOOLOGIQUE,' Huxley on.
PHOTOGRAPHS, albums of, presented to Darwin by German and Dutch scientists.
PHYSIOLOGICAL SOCIETY elects Darwin an honorary member.
PICTET, Francois Jules, reviews the 'Origin of Species.'
PIGEONS, Darwin's interest in.
PLANTS, fossil. sexuality of. A recent discovery.
PLATYSMA, contraction of, from shuddering.
PORTRAITS OF DARWIN, list of.
POTATO DISEASE, Torbitt's experiments on.
POUR LE MERITE, Darwin admitted to order.
POUTER PIGEON, variation in.
'POWER OF MOVEMENT IN PLANTS,' published. Work on.
PRESTWICH, J., letter to.
PREYER, W., letter to.
PRIMOGENITURE, law of, Darwin on.
'PRINCIPLES OF GEOLOGY,' Huxley on.
PRIORITY, nomenclature of species by.
PROGRESSION, necessary.
PROTECTION, modification for.
PUSEY's criticisms of the 'Origin of Species.'
'QUARTERLY REVIEW,' recognises merits of 'Journal of Researches.'
QUATREFAGES, J.L.A. de, letters to.
RELIGIOUS VIEWS OF DARWIN, difficulties not created by science.
REMINISCENCES OF DARWIN by Hooker.
REVELATION, Darwin's disbelief in.
REVERSION, Darwin on.
REYMOND, Du Bois-, letter to.
RICHMOND, W.B., paints Darwin's portrait.
RIDLEY, C., letter to.
RIVERS, T., letter to.
ROBERTSON, G. Croom, letter to.
ROBERTSON, John, reviews the 'Origin of Species.'
RODWELL, Rev. J.M., letter to.
ROLLESTON, George, his 'Canons.'
ROMAN CATHOLIC church on evolution.
ROMANES, G.J., on Darwin's conscientiousness. Letters to.
ROYAL COLLEGE OF PHYSICIANS presents the Baly medal to Darwin.
ROYAL SOCIETY OF EDINBURGH elects Darwin honorary member.
ROYER, Mlle. Clemence, translates the 'Origin of Species.' Publishes third French edition.
RUDIMENTARY organs.
SABINE, Gen., on the 'Origin of Species.'
SALTER, J.W., his diagram of spirifers. 'Sand-walk' described.
SANDERSON, J. Burdon, letter to.
SAPORTA, Marquis de, letter to.
SCHAAFFHAUSEN, H., claims to anticipate Darwin.
SCOTT, John, Darwin's estimate of.
SEDGWICK, Rev. Adam, mentioned. On the 'Origin of Species.' His review of the 'Origin of Species.' Criticises the 'Origin of Species.' On the imperfection of the geological record.
SEEDS, vitality of.
SELECTION, NATURAL, doctrine of, clearly conceived by Darwin about 1839. Opposed to doctrine of design. Effect of, on the scientific mind. And religion. Small effects of, in changing species. Among the nobility. Huxley's lectures to workingmen on. Progress of. Darwin anticipated on. Use of the term. Effect on sterility. Progress among the clergy. Progress of, in Germany. Progress of, in France.
SELECTION, SEXUAL, instance of, in the dogs of Beyrout.
SEMPER, K., letters to.
SHELBURNE, Lord, anecdote of.
SLAVERY, Darwin's opinion of. In the United States.
SMITH, Sydney, inexplicably amusing.
SOCIALISM and the descent of man.
SOCIETIES, learned, Darwin's membership in.
SOUTH AMERICAN MISSIONARY SOCIETY, Darwin's connection with.
SPECIES, mutability of. Origin of, effect of isolation on. Specific centres.
SPENCER, Herbert, letters to. Prof. Huxley's friendship with. Darwin on. Originates the term 'survival of the fittest.' His impression of 'Pangenesis.'
SPIRITISM, Darwin on.
SPONTANEITY, Bain's theory of.
SPRENGEL, C.C., his work on the fertilisation of flowers.