Photograph of two samples of common heather; one is eight years old and prime for burning; and the other is over thirty years old and becoming grey.

Photograph of a section of a layered stem of common heather showing the well-developed root system.

Photograph of a common heather plant showing the correlation between root and branch development and of a Deer-hair Sedge plant at 5-inches long.

Photograph of four samples of common heather from the island of Colonsay - two giant specimens from the East side, a stunted specimen from the West side and a walking stick.

Photograph of common heather shoots of one year's growth on a layered stem after burning showing the charred end and the roots end.

Photograph of samples of dead seedling heather and moss on decaying Sphagnum, lichen on the heather branch and purple Molina growing through living Sphagnum acutifolium.

Photograph of heather eaten by sheep, but not the branch with natural open straggling habit.

Photograph of a sample of old scroggy heather that is a foot-long.

Photograph of two samples of seedling heather; A) showing three years growth and B) showing one years growth and burnt at the 'right age' with charred ends protruding.

Photograph of six six-inch pans of seeding heather from seeds picked on Bonaly Hill in February 1916, except for pan number five which was from seed from a Yorkshire moor.