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The eider duck uses her down to
make a comforter for her eggs
Photos by D. B. Mac Millan, Leader of Crocker Land Expedition. Courtesy of American Museum of Natural History

Etah is the place we have selected for the Popular Science
Monthly's summer office. It is in northwestern Greenland

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After three years the MacMillan Expedition still had 30,000 pounds of biscuits left. Mr. Hoover ought to send his congratulations

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MacMillan had all the excitement of an Arctic picnic though he went for the purpose of exploring an unknown land

Greenland is not all ice and snow.
These flowers prove the contrary

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That artfully drooping tree branch-touch it not. trigger of a loaded pistol will The be pulled if you do, and a keg of explosives will be set off. This was one of the first devices adopted by the Germans when they introduced the art "of the camouflage of death

Look out for the house that has miraculously escaped destruction. If you walk up the steps, you are sure to touch a concealed cartridge cap and go higher than you wish

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More Bewildering Figures

The trains of the New York Subway make a total of 109,500,000 miles in a year. A track of that length would go fourteen times around the earth, then to the sun and six times around the sun. The total mileage of the trains of the London Subway is only 589,401 miles in a year. That would be equal to the distance to the moon and fourteen times around the earth

Eight Times Around

The New York Dual Subway will have 260 miles of single track. A track of that length could be wound around Manhattan Island eight times. The City and

The total amount of energy expended by the New York Subway System since its opening, October 27, 1904, would

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