Synopsis Translocation in plants has been carefully compiled and edited to meet the long felt needs of increasingly large number of those who have to deal with the different aspects of the transport of various substances from one part of plant to the other. It provides a balanced and integrated treatment of the entire field transport system. The title is intelligible to the educated layman but it deals with some complex ideas. It is an adequate text for all requirements in this area for most university students. Special efforts have been made to made ideas in non mathematical terms. The primary aim throughout has been clarity, simplicity and the high standard. It will definitely prove to be an authoritative work to teachers, students and research workers in the field of transport system.