688 



INDEX 



Von Faber (F. C.), on Pavetta nodules, 



45 

 Von Schrenk (H.), on intumescences, 



483 



WAITE (M. B.), discovers transmission 

 of pear blight by bees, 25 

 finds "hold over" blight, 360 

 photograph, 2 



Wakker (J. H.), 2 



Walnut blight, 473 

 in Chili, 55 

 in New Zealand, 55 

 in South Africa, 55 

 in Tasmania, 55 

 in United States, 55 



Water-color drawings, 129 



Water pores, infection through, 16, 21 



Water pores, figures illustrating, 146, 

 147 



Water, varying requirements of para- 

 sites for, 13 



varying requirements of plants for, 

 113 



Wehmer (C.), on potato rots, 264 

 West Indies, bacterial diseases found 



in, 52 



Wheat, basal glume rot, 57, 58, 474 

 black chaff of, 19, 20, 22, 23, 24, 26, 



27, 28, 29, 31, 32, 56, 70, 474 

 White spot of alfalfa (physiological), 61 

 Willow, 



disease of Japan, 53, 474 

 disease of South Africa, 423 

 Wilt disease 



of cucurbitacese in United States, 



55, 132 



of potato and tomato in Africa, 54 

 of tobacco in United States, 55 

 Witch-broom, on pine, result of bac- 

 terial infection, 50 

 Woods' disease of carnation, 473 

 Wordsworth, citation from, 634 

 Worms, cause of tumors or galls, 543 



YELLOW disease of hyacinths, 62 



ZOOLOGY, subsidiary study in plant 

 pathology, 634 





9947 



