National Geographic : 1925 May
592 THE NATIONAL GEOGRAPHIC MAGAZINE VERTICAL SECTION OF A HIBERNATING SQUIRREL AND DEN This squirrel was found November 15. He was partly awake, as were all discovered previous to this date. He is sitting just outside of the neck of the hibernating cell and just above the drain which runs down and to the left. The round circular patch of earth immediately above the squirrel is a plugged burrow filled with the lighter-colored soil. A HIBERNATING SQUIRREL IN MID-DECEMBER Found sitting on the flat of his back, tightly curled vertically, not horizontally, as is customary with a cat or dog. The top of his skull is flat in his lap. At the moment he was photographed he was beginning to revive and had raised up a little.