408 
1080. Humphrey, J. E. The powdery mildew of the cucumber (Erysiphe cichoracearum 
DC.) <Niutli Ann. Kept. Mass. Agr. Exp. Sta. for 1891, Amherst, 1892, pp. 
222-226. 
Describes the appearance and development of the disease. Recommends as a preventive 
a solution of sulphide of potassium (liver of sulphur), 1 ounce to 4 gallons of water. Stronger 
solutions injure the leaves. Ammoniacal carbonate of copper solution also effective, but 
vapor of sulphur better than either, care being taken not to have the sulphur burn (see 
No. 394). (J. F. J.) 
1081. Humphrey, J. E. The rotting of lettuce (Botrytis vulgaris, Fr.). <Ninth Ann. 
Rept. Mass. Agr. Exp. Sta. for 1891, Amherst, 1892, pp. 219-222. 
Describes the disease as due to Botrytis , possibly B. vulgaris , and traces its development. 
Considers B. vulgaris to be the conidial stage of some Sclerotium-producing Peziza. 
Recommends clean culture and keeping plants in a healthy condition as best preventives 
(see No. 394). (J. F. J.) 
1082. Humphrey, J. E. Various diseases [of potato, etc.]. <[Ninth Ann. Kept. Mass. 
Agr. Exp. Sta. for 1891, Amherst, 1892, pp. 226-235. 
Preliminary notes on diseases of the following plants: Potato, caused by a species of 
Macrosporium,; cucumber, caused by Acremonium (!) si).; rye, caused by TJrocystis occulata 
Wallr., and also by Puccinia rubigo-vera (DC.) Wint.; cabbage, caused by Plasmodiophora 
brassiere Wor.; celery, caused by a species of Cereospom or Septoria , probably that described 
by Chester as S. petroselini var. apii , occurring in Delaware; clover, caused by Uromycs 
trifolii and Polythrincium trifolii Kze.; fish eggs, caused by Achlya racemosa Hild.; black 
poplar, caused by Melampsora populina (Jacq.) Lev.; chestnut, caused by Marsonia ochreo- 
leuca (B. & C.); also plum and tobacco diseases. (J. F. J.) 
1083. Jones, L. R. Plant diseases. <Vt. Agr. Exp. Sta. Bull. No. 28, Burling¬ 
ton, Apr., 1892, pp. 15-36, fig. 1. 
The following diseases are discussed: (1) Potato blight and rot; this was successfully 
treated by the use of Bordeaux mixture; the question whether it will pay to spray is 
answered in the affirmative; the expense of spraying and method of making and applying 
the mixture are given. (2) A new potato disease, differing in various respects from the 
ordinary blight, and thought to be possibly due to bacteria. (3) Potato scab, which is 
described mainly from the North Dakota Agr. Exp. Sta. Bull. No. 4 (see No. 382). (4) 
Apple and pear scab, both of which were successfully treated, ammoniacal copper carbonate 
solution being preferred to Bordeaux mixture, as it does not injure the foliage and is cheaper; 
directions are given for making and applying the fungicides. (5) Oat smut, which can be 
prevented by the Jensen hot-water treatment, and for which directions are given (see Exp. 
Sta. Eee., vol. in, July, 1892, pp. 891-892). (J.F. J.) 
1084. Kerr, Chas. Diseases of eggplants. <[Fla. Disp. Farm and Fruit Grower, n. 
ser., vol. iv, Jacksonville, Apr. 21, 1892, p. 307, {■ col. 
Notes the “falling” of eggplants as due to Pythium debaryanum. Considers the “fall¬ 
ing” the same as “damping off,” and gives only remedy known to him as plenty of light 
and air and not too much moisture. (J. F. J.) 
ION5. McAlpine, D. Vegetable pathology. <[Dept. of Agr. Victoria, Bull. No. 
14, Melbourne, Dec., 1891, pp. 21-50, pi. 3. 
Gives more or less complete accounts of the following diseases: (1) Rust of wheat, describ¬ 
ing its cause and life history, and giving a list of host plants; it is due to Puccinia 
graminis. (2) Wheat blight, due to Septoria tritici. (3) Club-root of cauliflowers, cabbages, 
etc., due to Plasmodiophora brassiere. , mentioning the conditions favoring the disease and 
giving a sketch of the life history of the tungus. (4) Beet leaf rust, caused by Uromyces 
betoe/(o) Raspberry root fungus, the cause of which is stated to be lthizomorpha. (<>) Root- 
gall disease of cucumbers, due to a nematode worm. The descriptions of the diseases are 
accompanied by notes on remedies. (J. F. J.) 
1086. Lamson-Scribner, F. The fungous diseases of plants. <)Proc. 16tli Ann. Meet¬ 
ing East Tennessee 'Farmers’ Convention, May 19 and 20, 1891, Nasliville 
1891, pp. 16-25. 
An address concerning various fungous diseases, and treating of smuts of corn, oats, and 
wheat; mildew of potato; potato rot and scab; rusts of wheat, corn, apple, and blackberry ; 
and pear blight. Gives remedies for most of these, and discusses liquid and powder fungi¬ 
cides, with means ot applying remedies, and mention of good results ensuing. Issued as a 
separate under title of “Address on the fungous diseases of plants,” Nashville, 1891, 16°, 
pp. 31. (J. F. J.) 
1087. Speer, R. P. Our rusted and blighted wheat, oats, and barley in 1890. <Iowa Agr. 
Exp. Sta. Bull. No. 10 [Ames], Aug., 1890, pp. 391-400. 
Refers to the fact that many kinds of oats, wheat, and barley are invariably injured by 
rust, and gives details of experiments. Mentions varieties planted, and notes that ail 
varieties except Manshurv bailey were badly rusted, most of them so badly as not to be 
worth harvesting. Discusses the change in climate due to the cultivation of the prairies in 
the State and shows the relation between climate and attacks of rust. States that cereals 
are never injured by rust where there are no great extremes of summer temperature and 
no severe spells of drought. Advocates sowing of clover to regenerate the land, and gives 
