II.— Cultivated, 
c. Useful. 
a. Slightly affected. 
Gossypium lierbaceum et barba- 
dense (Cotton). 
Solanum tuberosum et csculcn- 
tum (Potato and Egg-plant). 
Capsicum anuuum (Pepper). 
Spiuacia oleracea (Spinach). 
Jatropba mauihot (Cassava). 
Zea mais (Corn). 
o. Badly affected. 
The Genus Brassica (Sinapis), 
(Cabbage, Kale, etc.). 
Rapbauus sativus (Eadish). 
Hibiscus esculentus (Olcra). 
Pisum sativum (Pea). 
Arachis hypogaea (Pea-nut). 
Dolicbos catiang (Cow Pea). 
Pbaseolus vulgaris (Bean). 
Phaseolus luuatus et nanus 
(Bean). 
All of tbe Genus Cucurbita 
(Squashes, etc.). 
All of tbe Genus Citrullus (Mel- 
on). 
All of the Genus Cucumis (Cu- 
cumber). 
Lycopersicuni esculentuni (To- 
mato). 
Beta vulgaris, varieties (Beet). 
d. Ornamental. 
a. Slightly affected. 
Hibiscus syriaens et coccinneus. 
Mesembryanthemum, various spe- 
cies (Ice-plant). 
Mikania scandens (Parlor lay). 
Pharbitis purpurea et al. sp. 
(Morning Glory). 
Nolana, sp. 
Petunia, sp. (Petunia). 
Boussingaultia basselloides. 
II. — Cultivated —Continued. 
b. Badly affected. 
Koniga maritima. 
Iberis umbellata. 
Lagenaria vulgaris (Gourd). 
Begonia, sp. (Begonia). 
Dahlia variabilis. 
Holianthus annuus (Sunflower). 
Coleus, var. sp. 
Achyranthes, var. sp. 
Amarantus var. sp. 
Shrubs and Trees. 
c. Useful. 
a. Slightly affected. 
Citrus vulgaris (Bitter sweet Or- 
ange). 
Citrus aurantium, var. sp, (Or- 
ange, Lemon, etc.). 
Vitis, var. sp. (Grape). 
Prunus myrobolanus (Plum). 
Broussonettia papyrifera (Paper 
Mulberry). 
Morus, var. sp. (Mulberry). 
Juglans cinerea ( Walnut). 
Carya oli va3formis (Pecan). 
b. Badly affected. 
Prunus domestica (Plum). 
Prunus armeniaca (Apricot). 
Prunus vulgaris (Peach). 
Prunus communis (Almond). 
Ficus carica (Fig). 
Juglans regia (English Walnut). 
Salix, var. sp. ( Willows). 
d. Ornamental. 
Spirea sorbifolia,var. sp. (Spirea). 
Prunus nana et lanceolata (Flow- 
ering Almond). 
Buddleia, var. sp. 
Gardenia florida (Cape Jessa- 
mine). 
This long list embraces the greater part of our most valuable food- 
plants, fruit-trees, and many of the choicest flowers, and it fully justi- 
fies the inquiry now made as to the history and means to prevent the 
spread of the disease induced by the Angtiillula. 
I think it useless to endeavor to account for the apparent vagaries of 
the Anguillula, as, for instance, to ascertain why the roots of the Prunus 
vulgaris are so badly affected, while Prunus cerasus are unhurt; or why 
the Leguminosre are susceptible and the Umbelliferre are not. It is 
reasonably sure that rapidly growing, soft tissued roots are better sub- 
jects for invasion, expansion, and decay than those of slow growth and 
