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Mt. Wilson to Measure Heat from Mars

Grafted Potatoes Grow like Fruit

Special Light Sensitive Plates to Catch Mars at Lick Observatory

Gas Mileage Wasted by Bad Adjustments

Scientists Observe Army of Centipedes on the March

Harvard Astronomers in Jamaica Plan Visual Observations of Mars

How Astronomers Will Observe Mars at Closest Approach

Forest Pests at Work in Yellowstone Park

Extensive Program Planned at Lowell Observatory

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Satellites of Mars to Be Studied by Naval Observatory

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