

^ 





/ 



H 



/ 



YELLOW DISEASE OF HYACINTHS. 



x. Painted after 23 days. nl 49. inoculated at x. Painted 



plant 28, inoculated at x. Painted alter 36 days. (4) Hyacinth scape, plant 20, inoculated at 



ninth bulb, Haarlem, August, 1906. (6) Longitudinal section through 



Plateau badly diseased, cavities present and lower surface ruptured. (7) 1 Ac ' ise of 



I cross-section, showing bacterial ooz< d bundles. 



appearance of individual scales in this stage of di ate 20. All from 



Hau' , Henrietta Schilthuis. 



