212 Studies in Bacteidosis 



made in the former paper, to which reference has been made above, 

 that in his investigation of the Grand Rapids Disease Dr Smith had 

 possibly been in error as to the etiology of the disease. 



Summary. 



1. The Stripe Disease and the Grand Rapids Disease of tomato are 

 distinct diseases caused by two bacterial parasites, Bacillus lathyri and 

 Aplanobacter michiganense. 



2. The yellow organism, Aplanobacter dissimulans n.sp. (Paine and 

 Bewley), which is frequently found associated with Bacillus lathyri is not 

 identical with Aplanobacter michiganense. 



REFERENCES. 



(1) Smith, E. F. (1914). The "Grand Rapids Disease" of Tomato. Bacteria in 



relation to Plant Diseases, Washington, D.C. ni. 161. 



(2) Paine, S. G. and Bewley, W. F. (1919). Studies in Bacteriosis. IV. "Stripe 



Disease" of Tomato. Ann. App. Biol. Yi. 183. 



{Received June 2Qth, 1922.) 



