-3- 
While we have not hesitated to consult such specialists 
as may be available, responsibility for the final form of the 
summaries and errors in them rests with us, in fact some statements 
made are mere personal opinion, subject to change as additional 
data may become available* 
In addition to an installment of the summaries covering 
specific diseases, a preliminary list of diseases mentioned in 
Foreign Plant Quarantines, Regulations, etc., and a tentative 
analysis of the basis of plant disease quarantine recommendations 
are submitted for possible use in the study meetings held at the 
various ports. 
It is suggested that users of these write-ups keep in mind 
that the information furnished and statements made are not official 
pronouncements of fact, policy, or opinion. They are merely work 
sheets used as a starting point when information is requested. They 
are offered in the hope that a critical study of them will stimulate 
thought and will tend to improve the inspector's knowledge of and 
understanding of his work. 
n, 
