it 
II.— Cultivated. Ii.— Cultivated —Continued. 
ce. Useful. b. Badly attected. 
a. Slightly affected. Koniga maritima. 
b. Badly affected. 
d. Ornamental. 
a. Slightly affected. 
Gossypium herbaceum et barba- 
dense (Cotton). 
Solanum tuberosum et esculen- 
tum (Potato and Egg-plant). 
Capsicum annunm (Pepper). 
Spinacia oleracea (Spinach). 
Jatropha manihot (Cassava). 
Zea mais (Corn). 
The Genus Brassica (Sinapis), 
(Cabbage, Kale, etc.). 
Raphanus sativus (Iadish). 
Hibiscus esculentus (Okra). 
Pisum sativum (Pea). 
Arachis hy pogzea (Pea-nut). 
Dolichos catiang (Cow Pea). 
Phaseolus vulgaris (Bean). 
Phaseolus lunatus et nanns 
( Bean). 
All of the Genus Cucurbita 
(Squashes, ete.). 
All of the Genus Citrullus (Mel- 
on). 
All of the Genus Cucumis (Cu- 
cumber). 
Lycopersicum esculentum (7o- 
mato). 
Beta vulgaris, varietics (Bect). 
Hibiseus syriacus et coccinneus. 
Mesembryanthemum, various spe- 
cies (Ice-plant). 
Mikania scandens (Parlor Ivy). 
Pharbitis purpurea et al. sp. 
(Morning Glory). 
Nolana, sp. 
Petunia, sp. (Petunia). 
Boussingaultia basselloides. 
Iberis umbellata. 
Lagenaria vulgaris (Gourd). 
Begonia, sp. (Begonia). 
Dahlia variabilis. 
Helianthus annuns (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 oliveeformis (Pecan). 
b. Badly affected. 
Prunus domestica (Plum). 
Prunus armeniaca (Apricot). 
Prunus vulgaris (Peach). 
Prunus communis (Almond). 
Ficus carica (Fig). 
Juglans regia (Lnglish Walnut). 
Salix, var. sp. (Willows). 
d. Ornamental. 
Spirea sorbifolia,var. sp. (Spirea). 
Prunus nana et lanceolata ( low- 
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 Anguillula. 
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 Leguminose are susceptible and the Umbelliferme 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 
