Chapter 26

Tyrrell, G, Foot Note 222

Uhlenhuth, on blood reactions, 135

Use and disuse, 28, 41-43, 48-54, 94, 95, 119, 149

Vanessa, 63

_V. levana_, 31

_V. polychloros_, 82

_V. urticae_, 65, 82

Variability, Darwin's attention directed to, 24 --W. Bateson on, 87-110 --causes of, 200

Variation, Darwin's views as an evolutionist, and as a systematist, on, 212 --and heredity, 87-110 --minute, 28-32 --in relation to species, 100, 101

Varigny, H. de, 6, 19

Verworn, 136

_Vestiges of Creation_, Darwin on _The_, 15

Virchow, his opposition to Darwin, 157, 158 --on the transmission of acquired characters, 149

Vogt, 137

Voltaire, 248

VRIES, H. de, the Mutation theory of, 31, 101, 151, 213

WAGGETT, Rev. P. N., on _The Influence of Darwin upon Religious Thought_, 223-245

Wallace, A. R., on Colour, 63, 71 --and Darwin, Foot Note 7, 23, 183 --on the Descent of Man, 116 --on Malthus, 17 --on Natural Selection, 2, 16, 163, 232

Wallace, A. R., on social reforms, 275, 276 --on Sexual Selection, 183, 184

Walton, 237

Watt, J., and Natural Selection, 21

WEISMANN, A., on _The Selection Theory_, 23-86 --his germ-plasm theory, 46-51, 149, 150 --and Prichard, 20 --and Spencer, 42

Weismann, A., on the transmission of acquired characters, 93-95 --156

Wells, W. C, and Natural Selection, 18

White, G., 3

Williams, C. M., 217

Wilson, E. B., on cytology, 99

Wolf, 249

Wollaston's, T. V., _Variation of Species_, Foot Note 59

Woltmann, 277

Woolner, 118

Wundt, on language, 207, 208

_Xylina vetusta_, 82

Yucca, fertilisation of, 78, 79

Zeller, E., Foot Note 3

_Zoonomia_, Erasmus Darwin's, 7

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