222 BACTERIAL DISEASES OF PLANTS 



have no definite opinion as to its cause. Possibly it is of fun- 

 gus origin. The disease appeared again the following year in 

 Berkshire County, according to Mr. Maynard, but less seri- 

 ously. Such tubers give spindling p'ants. My illustrations 

 should be compared with those of Jones, Miller and Bailey in 

 : ' Frost Necrosis of Potato Tubers" (Agr. Exp. Sta. of Univ. of 

 Wis. Research Bui. 46, Oct., 1919) which appeared since the 

 above was in type. 



LITERATURE 



The first paper definitely relating this tomato disease to a 

 particular organism was by the writer in 1910, Science, N. S., 

 May 20. 



For literature, etc., consult The Grand Rapids Tomato 

 Disease in " Bacteria in Relation to Plant Diseases," vol. Ill, 

 pp. 161-165. In this connection, read also what is said con- 

 cerning Spieckermann's potato disease, Ibid., pp. 166-167. 



Spieckermann and Kotthoff's full paper on the ring rot 

 of the potato is in Landw. Jahrbucher. Bd. 46, Heft 5, 1914. 



See also Paine, Sydney G. and Bewley, W. F. "Comparison 

 of the Stripe Disease with the Grand Rapids Tomato Disease" 

 in Studies in Bacteriosis. IV. "Stripe" Disease of Tomato. 

 The Annals of Applied Biology, Vol. 6, 1919, Nos. 2 and 3, pp. 

 200-202. 



