Dampier's statement of the mode of incubation (New Voyage round the World, ed.
Before each of these ages there is a period of incubation, or initiation: the first age begins with Abraham, but the period of initiation with the first man Adam.
Their cells during the period of incubation of the symbiotic organism are abundantly supplied with starch.
The period of incubation lasts for seven weeks, and the young are covered with a whitish down until almost as large as their parents.
The nest is a slight hollow in the ground, wonderfully inconspicuous even when deepened, as is usually the case, by incubation, and the blackspotted olive eggs (four in number) are almost invisible to the careless or untrained eye.