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Frog Observations

Jefferson wrote down when he first heard frogs to keep track of the seasons. Use this chart to compare when Jefferson first heard frog calls throughout his years of observations.

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  • Weather
  • Natural & Seasonal Cycles

Interactive Visualizations

  • Montpelier Phenological Observations Data Visualization
  • Plant Observations
  • Frog Observations
  • Bird Observations
  • Jefferson's Temperature Records: Maximum and Minimum Temperatures
  • Jefferson's Barometric Data Observations
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The Papers of Thomas Jefferson

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