Mil. Russell, of the United StatesGeological Survey, who has spent the season in the California mountains, near Mono Lake, says that the lava there is the result of recent volcanic outbursts. His studies on the old beaches lead him to the conviction that there have been two ice ages over the world, and that the second, dating back to the advent of man on the earth, was the most severe and protracted. He addsibat the signs of glaciers are as fresh as though left yesterday. He has found living glaciers back of Mono Lake, not^far from the Yosemite Yah ley. They are about a mile long and many feet deep.