Painting with gumtion: Accelerating art
 

Painting with gumtion: Accelerating art

http://www.spectroscopynow.com/commo...5988f07652.jpgJ.W.M. Turner used gumtion to make his paintings dynamic. It wasn't simply that he was a dab hand with the brush, he literally used a mixture called gumtion comprising mastic resin with a lead acetate additive to make his oils flow more slicker and smoother across the canvas a spectroscopic study shows.

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