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Updated: June 23, 2025
He explained that the eggs had just been placed there; but, like all green Martian eggs, they would grow during the five-year period of incubation until they obtained the size of those I had seen hatching on the day of my arrival on Barsoom.
The great majority of these records hung very closely around the 50 per cent. mark. The following is a fair sample of such data. It is the record of hatching hen eggs for the first six months of 1908, at one of the largest poultry plants in America: The Future Method of Incubation.
In the economy of the reproduction of the species of animals, one of the most important circumstances is the aeration of the ovum, and when this is not performed, from the blood of the mother as in the mammalia by the placenta, there is a system for aerating as in the oviparous reptiles or fishes, which enables the air freely to pass through the receptacles in which the eggs are deposited, or the egg itself is aerated out of the body through its coats or shell, and when air is excluded, incubation or artificial heat has no effect.
In other words, that a certain period of incubation is required in the body of the insect before the germ reaches its salivary glands, and consequently before it is able to inoculate any individual with the germs of yellow fever.
The twelve years that followed were not the happiest or most brilliant phase of Hawthorne's life; they strike me indeed as having had an altogether peculiar dreariness. They had their uses; they were the period of incubation of the admirable compositions which eventually brought him reputation and prosperity.
In order that she may be protected during the period of her incubation against weasels, polecats, ichneumons, and all such vermin, a design exhibiting either wonderful instinct or sagacity, is carried into execution by the male.
From the foregoing it will have become clear that the cause of a cold lies not so much in the cold draft, or the wet feet, as in the primary causes of all disease: lowered vitality, deterioration of the vital fluids and the accumulation of morbid matter and poisons in the system. The incubation period of the cold may have extended over many years or over an entire lifetime.
At first glance, this may seem to be contrary to common experience as well as to the theory and practice of medical science. But let us follow the development of a cold from start to finish. This will throw some light on the question as to whether it can be caught, or whether it develops slowly within the organism; also whether this development or incubation may extend over a long period of time.
In the herd to which this animal belonged, nine days after the first cow died, the second case occurred. First cow was sick five weeks. The time of incubation could not have been over six weeks, probably not over three weeks. Of these cows, one improved in eight weeks, the other in three weeks. Case 8. This cow had been sick three weeks. Killed. Autopsy.
It passed from incubation to visible manifestation when Bahá’u’lláh’s prophecies, enshrined for all time in the Súriy-i-Haykal, and uttered before Napoleon III’s dramatic downfall and the self-imposed imprisonment of Pope Pius IX in the Vatican, were fulfilled.
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