. Elements of plant biology. Plant physiology. ELEMENTS OF PLANT BIOLOGY A. G. TANSLEY, M.A., F.R.S. University Lecturer in Botany and Examiner in Elementary Biology to the University of Cambridge. LONDON: GEORGE ALLEN & UNWIN LTD. RUSKIN HOUSE, 40 MUSEUM STREET, W.C. i NEW YORK DODD, MEAD & COMPANY. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Tansley, Arthur George, 1871-. London, George Allen & Unwin Ltd.