INDEX. Humming-birds, colours and ornaments descriptive names of, 129 nests of, 137 geographical distribution and varia- of Juan Fernandez, 140 relations and affinities of, 148 eggs of, 152 feather-tracts of, 152 resemblance of swifts to, 152 differences from sun-birds, 154 353 MACAWS, 100 M. Madagascar, white-marked butterflies Madagascar once united to Africa, 325 Male birds, origin of ornamental plum- Male birds which incubate, 212 Males, theory of display of ornaments Malva sylvestris, M. rotundifolia, 233 Mammalia, supposed variations of, com- local resemblances of, in Africa, 262 of miocene period in Euro-Asia, 321 Variation, how influenced, 142 Vitality a cause of bright colour, 193 W. WARNING COLOURS, theory of, 189 Wave-lengths of coloured rays, 180 on Ajuga ophrydis, 223 West-Indian Islands, large and brilliant peculiarly coloured birds of, 262 White animals poisoned where black White colours influencing sense-percep- White colour doubly prejudicial to White tropical birds, 110 Wilson, Dr. on pottery from N. American Winds, influence of on temperature, 11 Woods from equatorial forest-trees, 36 LONDON R. CLAY, SONS, AND TAYLOR, BREAD STREET HILL |