Chapter XIII. The InvasionThe curriculum. - Observation on Sunday. - Balls of snow. - Doniphan and Briant. - Great cold. - The issue of fuel. - Excursion to Traps-woods. - Excursion to the Schooner bay. - Seal and penguins. - A public execution. From the month of May, the winter was finally established in the vicinity of the Chairman Island. What would it last? Five months, at least, if the island was higher in latitude than New Zealand. Also, precautions would be taken by Gordon so as to guard against the formidable possibilities of a long winter. In any case, here's what the young American had already noted among his meteorological observations: winter had begun with the month of May, that is to say, two months before July of the southern area corresponds to January of th