The helicity associated with the writhing number is obtained by observing that a torus with twist number ±1 may be distorted into a figure-8 configuration which appears untwisted. […] Note that at each step the total helicity, consisting of the sum of twist, kink, and link helicities, is conserved.

Now, more than 300 years later, Walt Disney lias spun the idea into a whoop-dee-doo of comic characters, a spatterdash of Technicolor and a u-dee-dah of nostalgic melodies.

Now converging, now diverging, these fences presented a striking irregularity of contour. No fence was party, nor any part of any fence.

However we recommend, particularly in cooler climates, sowing tomato seeds into a seed tray or punnet and allowing the seedlings to grow before they are transplanted into the garden.