Regeneration, power of. -reference in "Variation of Animals and Plants" to.

"Reign of Law," the Duke of Argyll's. -reviewed by Wallace.

Reindeer, of Spitzbergen. -horns of.

Religion and science.

Representative species. -in floras of Japan and N. America. -in Galapagos Islands.

Reproduction, difference in amount of energy expended by male and female in.

Reproductive organs, St.-Hilaire's view of affaiblissement and development of. -in relation to theoretical questions.

Research, Huxley and. -justification of.

Reseda lutea, sterile with own pollen. -R. odorata, experiment on cross-and self-fertilisation.

Resemblance, mimetic.

Resignation, expression in.

Restiaceae, former extension of.

Restricted distribution.

Retardation, Cope on.

Retrogression.

Reversion, in ammonites. -Darwin on. -and degeneration of characters. -factors causing. -hybridism and. -Lord Morton's mare and. -stripes of mules due to. -struggle between Natural Selection and. -and crossing. -peloria and.

Review of the "Descent of Man," by J. Morley.

Reviews, Darwin on an author writing his own. -on the "Origin of Species," by Asa Gray. -Haughton. -Hopkins. -Hutton. -Huxley. -F. Jenkin. -Owen. -Wilberforce.

Rhamnus.

Rhexia, flowers of. -R. virginica, W.H. Leggett on anthers.

Rhinoceros.

Rhinochetus.

Rhizocephala, retrograde development in.

Rhododendron Boothii.

Rhopalocera, breeding in confinement.

Rhynchoea, colour of.

Rich, Anthony (1804?-1891): Educated at Caius College, Cambridge, of which he was afterwards an Honorary Fellow. Author of "Illustrated Companion to the Latin Dictionary and Greek Lexicon," 1849, said to be a useful book on classical antiquities. Mr. Darwin made his acquaintance in a curious way--namely, by Mr. Rich writing to inform him that he intended to leave him his fortune, in token of his admiration for his work. Mr. Rich was the survivor, but left his property to Mr. Darwin's children, with the exception of his house at Worthing, bequeathed to Mr. Huxley. -legacy to Huxley. -letter to. -leaves his fortune to Darwin.

Rich, Mrs., mentioned.

Richardson, R., on tablet to commemorate Darwin's lodgings at 11, Lothian Street, Edinburgh.

Richardson, Darwin on merits of.

Rigaud, on formation of coal.

Riley, Charles Valentine (1843-95): was born in England: at the age of seventeen he ran away from home and settled in Illinois, where at first he supported himself as a labourer; but he soon took to science, and his first contributions to Entomology appeared in 1863. He became entomological editor of the "Prairie Farmer" (Chicago), and came under the influence of B.D. Walsh. In 1868 Riley became State Entomologist of Missouri, and in 1878 Entomologist to the U.S. Department of Agriculture, a post he resigned in 1894 owing to ill-health; his death was the result of a bicycle accident. (Taken principally from the "Proceedings of the Entomological Society of Washington," Volume III., 1893-6, page 293.) -letters to. -mentioned.

Rio Janeiro, absence of erratic boulders near. -Agassiz on drift-formation near.

Rio Negro.

Rio Plata.

Ritchie, Mrs., visit to Down.

Rivers, The late Mr. Thomas: of Sawbridgeworth, was an eminent horticulturist and writer on horticulture. -letters to.

Robin, attracted by colour of Triphaena (Triphoea).

Robinia, insect visitors of.

Rocks, bending when heated. -condition in interior of earth. -fluidity of. -metamorphism of (see also Metamorphism).

Rocky Mountains, wingless insects of the.

Rogers, W.B. and H.D., on cleavage. -on coalfields of N. America. -on parallelism of axis-planes of elevation and cleavage.

Rolleston, George (1829-81): obtained a first-class in Classics at Oxford in 1850; he was elected Fellow of Pembroke College in 1851, and in the same year he entered St. Bartholomew's Hospital. Towards the close of the Crimean War, Rolleston was appointed one of the Physicians to the British civil hospital at Smyrna. In 1860 he was elected the first Linacre Professor of Anatomy and Physiology, a post which he held until his death.

Charles Darwin

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