THE MILLARDETIAN PERIOD 67 



the pioneer investigations of Burrill, more extensive and 

 detailed studies of the pathogene were undertaken by J. 

 C. Arthur, at that time, 1885, botanist of the N. Y. 

 (Geneva) Experiment Station, 1 and by M. B. Waite of the 

 U. S. Department of Agriculture. 2 Many other workers 

 in all parts of the United States and Canada have since 



THOMAS J. BURRILL. 



Discoverer of bacterio-phytopathogenesis. (From a photograph, cour- 

 tesy of Dr. Erwin F. Smith.) 



worked on the disease, so that we now possess a more 

 extensive and better knowledge of the first recognized 

 bacterial disease of plants than of almost any of the other 

 numerous bacterial maladies since brought to light. 



1 For a list of Arthur's papers on pear blight, see New York (Cornell) 

 Agr. Exp. Sta. Bui. 329 : 368, 1913. 



2 Waite, M. B.: Cause and prevention of pear blight, U. S. Dept. 

 Agr. Year Book 1895 : 295-300, 1896. 



