From the story "But a Watch in the Night.""

            From the story "But a Watch in the Night.
             There is planet called Copernicus beyond our solar system which came into existance before the birth of our Earth . The Capernicans are very intelligent people .
             The Copernicans had developed a time-lapse camera and also superpowered telescopes that gave them clear view of what was happening upon this Earth.
             They decided to make a film of the history of Earth .The photography had been in progress during the last 757 million years.
             It was planned that in the future a Copernican would arrive to our Earth and bring us a copy of the time -lapse film.There would be arrangements so the film could be seen in one cotinious run.The arrangement was that the film would start at midnight on New Year's Eve and continue day and night until midnight of December 31.The Earth history would be extended from the Precambrian time up to the present.
             So the film started.
             During January ,February and March ,there were shapes of land masses and oceans .In April there will be the presence of single-celled living organisms and by the end of the month,it will be noticed that some of these organisms have become multicelular.
             Toward the end of May,there will be the first vertebrates .In June about the 60% of the land area that we know as North America will be under water; oil and gas deposits will be in process of formation,and on land there will be no sign of vegetation.