vi Preface 



following pages will act as an incentive to other students 

 of Nature to continue their researches. 



My heartiest thanks are due to the Rev. E. N. 

 Bloomfield, M.A., F.E.S., of Guestling Rectory, near 

 Hastings, for the most valuable help and information 

 which he has given me from the time I commenced 

 the study of vegetable galls. 



I also gratefully acknowledge the assistance rendered 

 in many details by my wife and my sons Russell 

 Ernest and Harold Thomas. On several occasions my 

 sons have discovered very fine specimens. 



Prof Dr. Alfred Nalepa of Vienna has kindly identified 

 many of the galls caused by mites. 



Mrs. Coupland and Miss M. Bates have rendered 

 invaluable service in translating Dr. Nalepa's works on 

 Mites and his most helpful correspondence. 



To Mr. Frank B. Fermor I am deeply indebted 

 for the time and patience which he has so kindly and 

 unreservedly bestowed upon the correction and revision 

 of the proof-sheets. 



I am also ver)' grateful to Miss R. D. Roff King for 

 her valuable assistance v^ith the notes, photographs, 

 proof-sheets, and various details connected with the 

 compilation of the MS. 



For the gift of specimens I desire to thank most 

 sincerely Miss Ethel Sayer, Rev. E. N. Bloomfield, 

 Messrs. Frank Hall, R. R. Hutchinson, Walter Field, 

 F. W. Terry, W. Furlonger, and G. C. Walton. 



7, M.\GDALEN Terrace, 

 St. Leonards ox Sea 



