8 DISEASES OF GLASSHOUSE PLANTS 
observer; the facts have been carefully sorted, the 
deductions thoroughly examined, and, in consequence, 
Dr. Bewley has been able to present to the growers 
sound information which cannot fail to help in the 
management of their nurseries, while his record of 
observations will prove of great assistance to plant 
pathologists. 
K. J. RUSSELL. 
September, 1923. 
