CATALOGUE OF BRITISH PLANT-GALLS 129 



The majority of our plants have well-established popular 

 names ; these I have given, and included in the general 

 index. 



The number which follows the scientific names of the 

 plants indicates the number of counties in which the species 

 have been reported to occur, and is taken from the tenth 

 edition of the London Catalogue. 



It cannot be expected that a catalogue of this magnittide 

 will be free from errors. The literature of the subject 

 being so widely scattered (see Bibliography), it is highly 

 probable that many records have been overlooked. I claim 

 the indulgence of my readers on this score, and invite their 

 kind assistance towards the preparation of a second edition 

 by means of letters of criticism, and by sending galls of 

 which mention has been omitted. 



