# Page:Popular Science Monthly Volume 24.djvu/67

tween, say, fifteen feet a century at one end and a little over two feet a century at the other. This might be at the following rate, taking each figure for the growth of a century: 15 ${\displaystyle +}$ 13 ${\displaystyle +}$ 10 ${\displaystyle +}$ 8 ${\displaystyle +}$ 6 ${\displaystyle +}$ 3 ${\displaystyle +}$ 2 ${\displaystyle =}$ 57. By which calculation seven centuries would have been the tree's age when Sir Robert Atkyns declared it to be fifty-seven feet in 1712, an antiquity that would amply satisfy tradition, but could not remove the probability that the tree is not a single trunk, but really a number of different trees that have become incorporated together.