Blight Canker of the Apple Tree. 217 



17. Sackett, W. G. Some Bacterial Diseases of Plants prevalent in Michigan. 



Pear Blight, Mich. State Agr. Exp. Sta., Bull. No. 230, 205-210. 1905. 



18. Smith, R. E. The Water Relation of Puccinia asparagi. Bot. Gaz. 38, 



30-31. 1904. 



19. Sturgis, W. C. Fire Blight (Microccus amylovorus Burr). Conn. State Exp. 



Sta. Rept., 113-117. 1894. 



20. Whetzel, H. H. Blight Cankers of Apple Trees. The Fruit Grower, St. 



Joseph, ]Mo., 5-9, Fig. 8. Nov., 1905. 



21. Author? Canker on Apple Trees. Jour. Bd. Agr. (London, Eng.), No. i, 



66-69 6(1899). 



22. Author? The Canker Fungus (Nectria detissima). Bd. Agr. (London, Eng.), 



Leaflet No. 56, p. 7, Fig. 2. 1899. 



