252 BACTERIAL DISEASES OF PLANTS 



you can find on this subject and make some experiments. The 

 man who is continually trying out his ideas by means of careful 

 experiments is the one who makes discoveries. Reading 

 alone will not serve; it makes a, full man, but not a. fruitful one. 

 Transmission. — Nothing is known respecting special carriers 

 of this disease. One should certainly avoid throwing diseased 

 refuse into manure piles and into streams, and rotation of crops 

 should be practised. Carrots should be dried and sunned as 

 thoroughly as possible before storage, which should be at a low 

 temperature. 



LITERATURE 



Read Jones: ^^ Bacillus carotovorus n. sp., die Ursache einer 

 weichen Faulniss der Mohre." Centralb. f. Bakt., 2 Abt., 

 VII Bd., 1901, pp. 12 and 61; also Jones: "A soft rot of carrot 

 and other vegetables, etc." 13th Report, Vermont Experiment 

 Station, 1901; and Jones, and Harding and Morse: ''The bac- 

 terial soft rots of certain vegetables" (23d Annual Report, 

 Vermont Agricultural Experiment Station, 1910, where other 

 literature is referred to.) 



Consult ''Bacteria in Relation to Plant Diseases," Vol. I, 

 Figs. 2, 3, and 88, and some statements in the text; also Ibid., Vol. 

 II, text statements (see index). 



Read Spieckermann's " Beitrag zur Kenntnis der bakteriellen 

 Wundfaulnis der Kulturpflanzen," Landw. Jahrb., 31 Bd., 

 BerUn, 1902, p. 155, and Harrison's "A bacterial rot of the 

 potato caused by Bacillus solanisaprus^' Centralb. f. Bakt., 

 2te. Abt., XVI, Bd., 1907, pp. 34, 120, 166, 384. 



See also Townsend's paper: "A Soft Rot of the CallaLily," 

 U. S. Dept. Agr., Bureau of Plant Industry, Bulletin No. 60, 

 47 pp., 9 pis., 7 text figures, 1904. 



And Gidding's paper: "A Bacterial Soft Rot of Muskmelon, 

 Caused by Bacillus melonis n. sp.," Vermont Agricultural Ex- 

 periment Station, Bui. No. 148, pp. 366-416, with 14 text 

 figures, 1910. 



The first papers on this subject and the last one also are by 

 Prof. L, R. Jones. 



