How do plants lift water against gravity? It explains water's upward journey. Henry Dixon's Transpiration and the Ascent of Sap in Plants is a rigorous, eminently readable scientific monograph on the plant transpiration process and the mechanics of xylem sap movement. Part technical study, part lucid tutorial, it lays out the principles behind water transport in plants with precision and clarity: observations, experiments and argument arranged for practical understanding. Readers approaching it as a plant physiology textbook supplement appreciate the methodical logic; students of advanced plant biology or anyone curious about plant water relations find accessible explanation alongside scholarly detail. The work's emphasis on mechanism and measurement supplies concrete vocabulary and models that still inform discussion in a university botany course, while Dixon's clear prose keeps complex ideas approachable. More than dry theory, Dixon's writing still conveys the sense of steady, patient enquiry that made it a botanical science classic in historical plant science. Republished by Alpha Editions in a careful modern edition, this volume preserves the spirit of the original while making it effortless to enjoy today - a heritage title prepared for readers and collectors alike. As an early 20th century botany text, it charts debates about how transpiration powers the ascent of sap and engages lecturers shaping a university botany course, botanists comparing past and present models, gardeners fascinated by water transport in plants, and collectors seeking a scientific monograph on plants with historical significance. Concise, authoritative and richly informative, Henry Dixon's study of transpiration rewards both casual curiosity and specialised study; it is as suitable for a curious gardener or amateur naturalist as it is for scholars tracing the development of plant water relations and the history of botanical science. For casual readers and classic literature collectors alike, this edition rewards curiosity and curation in equal measure.