Barometer Small 127×320 Medium 253×640 Large 405×1024 Download Tiff Original 949×2400 | (232.7 KB) Description "...being merely a tube of glass, nearly filled with mercury, with its lower end placed in a dish of the same fluid, and the upper end furnished with a scale, to measure the height of the mercury." -Comstock 1850 Keywords air, Barometer, glass, Mercury, pressure Galleries Chemistry Apparatus Source: J. L. Comstock A System of Natural Philosophy: Principles of Mechanics (: Pratt, Woodford, and Company, 1850) 151
