MONOCHROME

I. Robert Hooke's 'proof' of the non-reality of human concepts

II. Leaf-metamorphosis

III. Leaf-metamorphosis

IV. Goethe's sketch of a cloud-formation

V. A Snow-Crystal

VI. A cluster of Calcite crystals

VII. Various species of bacteria

VIII. Various species of fresh-water algae


Author's Note

The author makes grateful acknowledgment of the help he has gained from
other works in the wide field opened up by Rudolf Steiner, and of his
debt to the friends who in various ways assisted him in preparing his
manuscript.

Quotations have been made from the following books by kind permission
of their respective publishers: