Volume III., page 279, 1882. By H.B. Woodward.)

-letters to.

World, age of the.

Worms, Darwin's work on. -destruction by rain of. -intelligence of.

Wrangel's "Travels in Siberia."

"Wreck of the 'Favourite'," Clarke's.

Wright, C., on bees' cells. -letters to. -review by.

Wright, G.F., extract from letter from Asa Gray, to.

Wydler, on morphology of cruciferous flower.

Wyman, Jeffries (1814-74): graduated at Harvard in 1833, and afterwards entered the Medical College at Boston, receiving the M.D. degree in 1837. In 1847 Wyman was appointed Hervey Professor of Anatomy at Harvard, which position he held up to the time of his death. His contributions to zoological science numbered over a hundred papers. (See "Proc. Amer. Acad. Arts and Sciences," Volume II., 1874-75, pages 496-505.) -letter from. -on spontaneous generation. -mentioned.

Xenogamy, term suggested by Kerner.

Xenoneura antiquorum, Devonian insect.

Xerophytic characters, not confined to dry-climate plants.

Yangma Valley, Hooker's account of dam in.

Yeo, Prof. Gerald.

Yew, origin of Irish.

York, British Association meeting (1881), (1844). -Dallas in charge of museum.

Yorkshire, Hooker on glaciers in.

Yucca, fertilisation by moths.

Zacharias, Otto, letter to.

Zante, colour of Polygala flowers in.

Zea, Gartner's work on. -hermaphrodite and female flowers on a male panicle. -varieties received from Asa Gray.

Zeiller, R., "Le Marquis G. de Saporta, sa Vie..."

Zinziberaceae.

Zittel, Karl A. von, "Handbuch der Palaeontologie."

Zoea stage, in life-history of decapods.

Zoological Gardens, dangerous to suggest subsidising.

Zoological nomenclature.

Zoologist, Darwin as.

"Zoonomia," Erasmus Darwin's.

Zygaena (Burnet-moth), mentioned by Darwin in his early recollections.