——, rudimentary, [454].
Earth, seeds in roots of trees, [361].
Eciton, [238].
Economy of organisation, [147].
Edentata, teeth and hair, [144].
——, fossil species of, [339].
Edwards, Milne, on physiological divisions of labour, [115].
——, on gradations of structure, [194].
——, on embryonical characters, [418].
Eggs, young birds escaping from, [87].