PLANTS in HEALTH and DISEASE 



being 



An Abstract of a Course of Lectures 

 delivered in the University of Ma7ichester during the sessio?i 



1913-16 



, jt.* - BY 



F. E. WEISS, D.Sc, 



Harrison Professor of Botany, 



A. D. IMMS, M.A., D.Sc, 

 Reader in Agricultural Entomology^ 



AND 



WILFRID ROBINSON, M.Sc, 



Lecturer in Economic Botany. 



Manchester 

 AT THE UNIVERSITY PRESS 

 12, Lime Grove, Oxford Road. 



LONGMANS, GREEN & CO. 

 London, New York, Bombay, 

 etc. 



1916. 



