140 



BACTERIA IN RELATION TO PLANT DISEASES. 



In cultures in peptone-water containing acid fuchsin and a little hydrochloric acid (to counteract 

 the alkalinity of the Witte's peptone) the red color persisted a long time, fading very gradually ; the 

 moderate amount of bacterial precipitate was yellow and unstained. 



When Bact. stewarti was inoculated into salted peptone-water containing indigo carmine, there 

 was no immediate reduction, but the blue color disappeared after about 2 weeks. In the case of Bact. 

 hyacinthi and Bact. pericarditidis (B. pyocyaneus pericarditidis) the blue color persisted for a long time, 

 gradually changing to green, and then fading. 



TABLE 17. Growth of Bacterium stewarti in Various Media. Inoculations of August j, 1908. 



McCulloch and Galloway Strains. 



"For composition, see p. 141, footnotes ({) 



TABLE 18. Growth of Bacterium stewarti in Various Media. Inoculations of August 5, 1908 (from 

 Bouillon Transfers made from an Agar Slab, No. i, November 16, IQO'J), Miss Hedges' Strain.] 



tThis third strain was plated in 1007 hy Miss Hedges and transferred by Miss McCulloch Aug. 3. WS. from agar-stab (No. i, Nov. 16, 1907) which 

 had remained alive in cool box 8.5 months agar dried out one-half. Tube labeled: "Fr. i. July 31. 1907. through 1313 of Nov. u, 'aft" 



