"Having been requested to re-edit Hayward's very useful 'Botanist's pocket-book,' I found that the large amount of excellent field-work which has been done in Britain during the last thirty years made it necessary to widen its scope considerably. At the same time, the original plan, where possible, has been retained. The work in this compressed form necessarily cannot include complete descriptions; it is intended merely to enable the botanist in the field to name his specimens approximately, and to refresh the memory of the more advaned worker who may use it. Almost all the important species and varieties, and the more completely established alien species mentioned in Syme's Edition of 'English botany,' in my 'List of British plants,' and in the 10th Edition of the 'London catalogue,' will be found included"--Preface to the thirteenth edition.

First published in 1910, "Practical Plant Physiology" is an accessible guide to elementary botany. Originally designed for students and teachers, it offers an introductory outline of the experiments and experimental methods used in botany and plant investigation, as well as other useful information related to the subject. This volume will be of considerable utility to those with an interest in plants and botany, and it would make for a fantastic addition to collections of allied literature. Contents include: "The Problem of Plant-Physiology and the Method by which They are to be Solved", "Germination", "The Mode of Germination of Seeds", "The Parts of the Seed and Seedling", "The Resting and Active States of Seeds", "The Food-Materials of Seeds", "Changes During Germination", etc. Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this volume now complete with a specially-commissioned new introduction on botany.