CHAPTER I.
CHAPTER I. THE FOOD OF TREES IS IMBIBED BY THE SURFACE OF THE ROOTS. Proportion the head of a transplanted tree to the root. , . 12 Prefatory remark to entering on the physiology of trees . . 12
The course of the Treatise will go, with the sap, from the root, through the wood to the leaf, and back by the bark to the root . 18 Except the unripe ends of roots, trees imbibe from all parts exposed
to moisture, and transpire from all parts exposed to drought . 14 The food of trees is imbibed by the surface of the roots . . . 14 Food of agastric animals imbibed by the surface’. . . . 14 Seeds imbibe by the surface . . . . . . , . 14 Cuttings imbibe by the surface , . , . , . 15 The coiled branch imbibes by the surface . ; . . . 17
Radishes imbibe by the surface . . . , . , . 17
V1 CONTENTS.
The unripe ends of roots do not imbibe
Formation of the ends of roots
Ends of roots consist only of bark, which i is the descending, n not the ascending, conduit . . , . . : , , .
Experiments in proof ;
Seedlings are not nourished by their roots till the roots become woody, but by the seed ;
Symmetrical growth on root of horse-chestnut
Twin oaks .
That a radish is fed only by its end. a& fallacy .
Experiments in proof
That branches are the same length as roots a fallacy, and that the.
ends of branches drip on to the ends of roots a fallacy .
Branches shorter than roots, and the drip is through them, not out- side them
Form of the root a flat ‘circle. like a wheel ; form of the head a a globular circle, like a ball
The head robs the root of a little rain, but more than repays this by condensation .
Rain and condensation are often shed inwards | or towards the stem .
Argument from the ‘ Gardener’s Chronicle ’ considered
The spade the destroyer of wall-fruit trees
Unphilosophical remedies
That roots absorb only by sponges or r capillary stomata at their ends a scientific vulgar error .
Whether this is true or not of vital importance to transplanting
Ends of roots to a tree what children are to a commonwealth .