TABLE I. BACTERIAL PLANT DISEASES. 



SPECIFIC NAME OF 

 GERM. 



Bac. amylovorus 

 (Burrill) De Toni. 



Bac. sorghi, 

 Burrill. 



NAME OF 

 DISEASE. 



Pear blight. 

 Fire blight. 



Sorghum 

 blight. 



HOST PLANTS AFFECTED BY NATURAL AND 

 ARTIFICIAL INFECTION. 



Pear (Pyrus communis). 



Apple (P. malus). 



Anier. mountain ash (P. Americana). 



Crab-apple (P. sinensis). 



Quince (Cydonia vulgaris). 



English haw (Cratsegus oxyacantha). 



" (C. tomentosa, var. parviflora). 

 Shadbush (Amelanchier Canadensis). 

 Red raspberry 1 (Turner and Marlboro var.) 

 Blackberry (var. Snyder). 

 Kelsey plum (Prunus sp. ) 



l lu horizontal column refers to Detmer's work. 

 Actual inoculations in this case not made. 



Sorghum vulgare. 



#) saccharine var. 



b) non " 

 S. halapense? 



(broom corn). 



ORGANS OF PLANT 

 AFFECTED. 



Flower clusters, young 

 fruit, more succulent 

 woody tissue and foliage. 



1 Base of stem and 

 branches. 



Leaf-sheaths and leaves, 

 roots. 



Bac. Zese, 

 Burrill. 

 (Bac. secales.) 



Corn blight. 



Zea mays. 



Roots, stem (lower inter- 

 nodes), leaves and sheath, 

 fruit. 



Bac. hyacinthi, 

 Wakker. 



Yellows of 

 hyacinths. 



Hyacinthus orientalis. 



Xylem portion of fibro- 

 vascular bundle in bulbs 

 and leaves ; parenchyma 

 in leaves. 



Bac. hyacinthi 

 septicus. 

 Heinz. 



Hyacinth rot. 



Hyacinthus sp, sp. Allium Cepa. 



B. oleae-tuberculosis, 



Savastano. 

 (B. oleas) Trev. 



Tuberculosis. 



(Rogna) 



Italy. 



(Maladie de 

 la loupe) 



France. 



Olea Europea. 



Leaves, flower clusters, 

 and bulbs. 



Cambium and bast of old 

 as well as young wood. 



