Weems & Plath Stormglass Barometer

Dimensions: 6-1/2" Tall x 1-1/4" Diameter Hermetically-Sealed Glass Chamber is Housed in a Handcrafted Brass Cylinder Select Finish, Packaged In Velvet Lined Black Gift Box Item #:  400718 Brand:  Weems & Plath Model #:  See Choices Below Shipping Weight:  1.75 Lbs. This is the stormglass, a mysterious device used to predict weather since 1750, employed by Admiral FitzRoy, captain of the H.M.S. Beagle, when he and his lieutenant, Charles Darwin, voyaged to the coast of South America and the Galapagos Islands in 1831 to conduct a hydrographic survey for commerce and naval expeditions for the British Royal Navy. Although how it functions remains a mystery, the stormglass' ability to predict atmospheric change is well documented. One theory states that the stormglass responds to electromagnetic fluctuations caused by weather and solar storms. The contained liquid, a mixture of distilled water, potassium nitrate, ammonium chloride, alcohol, and camphor, appears cloudy whe