Sum of the Arts
Miles messages can travel in Turkey's old whistling language = 3

Inspired by the Harper’s Index, Sum of the Arts is a periodic tabulation of numbers floating around the art world and beyond.
- Year in which Thomas Davies completed the first eyewitness painting of Niagara Falls, including a rainbow = 1762
- Miles messages can travel in Turkey’s whistling language = 3
- Number of hand-colored and hand-cut sheets in an 18th-century paper peep show = 6-8
- Weight in pounds of each of Henry the taxidermy elephant’s tusks, which were replaced by the Smithsonian National Museum of Natural History in the 1970s with lighter fiberglass = 90
- Percentage of light trapped by the carbon nanotubes on artist Frederik De Wilde’s black square “NanoBlck-Sqr #1” = 99.99
- Feet of metallic fabric in Zaha Hadid’s shelter protecting pedestrians from her residential building construction on the High Line = 112
- Number of ticking clocks Thelma Hulbert Gallery in Devon hopes to collect for a “garden of time” installation by Luke Jerram = 1,000
- Number of years Georgia’s Crypt of Civilization, the first modern time capsule, is intended to be buried = 6,177
- Number of plastic bottles sculpted into waves for two life-size whales made from willow in Bristol = 70,000
- Number of segmented worm specimens in the American Museum of Natural History = 3,516,100