Mycetes caraya, polygamous; vocal organs of; beard of; sexual differences of colour in; voice of.
Mycetes seniculus, sexual differences of colour in.
Myriapoda.
Nageli, on the influence of natural selection on plants; on the gradation of species of plants.
Nails, coloured yellow or purple in part of Africa.
Narwhal, tusks of the.
Nasal cavities, large size of, in American aborigines.
Nascent organs.
Nathusius, H. von, on the improved breeds of pigs; male domesticated animals more variable than females; horns of castrated sheep; on the breeding of domestic animals.
Natural selection, its effects on the early progenitors of man; influence of, on man; limitation of the principle; influence of, on social animals; Mr. Wallace on the limitation of, by the influence of the mental faculties in man; influence of, in the progress of the United States; in relation to sex.