There has been a fascination with the color of the Sky. Horace Benedict Saussure created a device with various pieces of paper colored in shades of blue to take measurements of the dolor of the sky. in 1876 he climbed Mont Blanc he held up these swatches to measure the blueness of the sky. He later developed the Cyanometer, which was a circle of paper containing the swatches of blue graduated from the lightest tone to the darkest. The color he measured on Mont Blanc he determined was of the 39th degree of darkness. He thought the darkness was due to the high altitude. In the 1860’s when the cause of the skies blueness was found to be that blue light waves traveled faster in the scattering of light and blue waves reached our eyes first, then the Cyanometer fell out of favor.