A storm glass is a type of weather forecasting device, composed of a sealed glass container filled with liquid. The appearance of the crystal purportedly predicts the weather. The liquid within the glass is a mixture of several ingredients, this specific mixture was developed by Admiral Robert FitzRoy and used on HMS Beagle ship. During the historic voyage, FitzRoy carefully documented how the storm glass would predict the weather. In 1859, violent storms struck the British Isles. In response, the British Crown distributed storm glasses, then known as “FitzRoy's storm barometers,” to many small fishing communities around the British Isles that were to be consulted by ships at port before setting sail. A popular item in the 1860s, popularised (though not invented) by Admiral Robert FitzRoy. The degree to which the liquid inside the orb crystalises is supposed to be predictive of weather conditions. See for yourself how well our scientifically accurate reproduction works!
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