ideal primitive, 143, 144;
embryology of, 143, 155.

_Vespa vulgaris_, 331.

Vestigial organs, 65-97.

_Volucella inans_, and _V. bombylans_, 329.

W.

Wagner, Moritz, on geographical distribution, 216.

Wallace, A. R., on origin of species as coincident in time and space
with pre-existing and allied species, 22;
on wingless insects, 70;
on absence of hair from human back, and function of on arms of
orang, 89;
on geographical distribution, 207, 231, 232, 233, 243;
on natural selection, 256;
on recognition marks, 271-273;
on alleged deductive consequences of the natural selection theory,
273-276;
his theory of warning colours, 323, 324;
on sexual selection, 391-400, 450;
his principal defect in treating of animal colouration, 449, 450.

Warning colours, 323-326.

Wasp, imitated by a fly, 329.

Water-cress, multiplication of, in New Zealand, 286.

Weevils, on St. Helena, 232.

Weismann, his theory of heredity, 130, 134.

Wells, Dr., on natural selection, 257.

Wetterhan, Prof., on vegetable galls, 448.

Whales, 38, 50, 53, 54, 65, 180.

Whewell, on natural selection, 257, 258, 443-445.

Wings, 54-56, 60, 61, 68-70, 355.

Wolf, Tasmanian, dentition of, 34.

Wood, John, on vestigial muscles in man, 77.

Woodward, on fossil cirripedes, 431.

Woolner, on the human ear, 86.

Worms, embryology of, 155.

Wyman, Prof., on the great toe of human embryo, 79, 80.

Z.

_Zona pellucida_, 121.

+--------------------------------------------------------------+
| |
| Transcriber's Notes and Errata |
| |
| The following words were found in both hyphenated and |
| unhyphenated forms in the text. The number of instances is |
| given in parentheses after each word. |
| |
| |deer-hound (2) |deerhound (1) | |
| |fresh-water (13) |freshwater (1) | |
| |inter-relations (1) |interrelations (1) | |
| |re-action (1) |reaction (1) | |
| |sea-weed (7) |seaweed (1) | |
| |super-natural (2) |supernatural (24) | |
| |wood-cut (3) |woodcut