59 
295. McCarthy, Gerald—C ontinued. 
tlio German Association at Bremen, allowing the poisonous effects of copper 
sulphate. The investigator finds the dry substance of plants grown in soil 
impregnated with copper sulphate to decrease in proportion to the quantity 
of that salt present. Expresses the opinion that the formulae for the Bordeaux 
mixture may be modified, greatly lessening the amount of copper, and refers 
to work done at St. Michel Experiment Station and to experiments per¬ 
formed by Quantin, Mason, and others. Reports Bordeaux mixture containing 
one-fourth to one-eighth the usual amount of copper as giving results equiva¬ 
lent to the regular formula. 
296. Morgan, A. P. North American fungi. Fourth paper. Read January 6, 1891 
(with plates). The Gastromycetes. The Journal of the Cincinnati Society 
of Natural History, Cincinnati, Ohio, vol. xiv, No. 1, Apr., 1891, pp. 5-21 
(a continuation from vol. xii, p. 172, of same journal). Treats of the North 
American species of Lycoperdon, Tourn., giving generic and specific descrip¬ 
tions, with notes upon distribution. Describes as new L. Pechii, Morg.; L. 
elegans , Morg.; L. muscorum, Morg., and gives careful descriptions of 28 other 
species with frequent figures. Monographic and of great value to mycolo¬ 
gists in the study of this genus. 
297. Moseley, Henry C. The chinch hug cholera. Farmers’ Review, Chicago, Ill., 
June 3, 1891, vol. xxii, No. 22, p. 255 (1 column). Notes appearance in 
Illinois of a mold upon chinch bugs and refers to work of Professor Snow on 
the subject (see 103)'. 
298. Phillips, W. Omitted Discomycetes. Grevillea, June, vol. xix, No. 92, p. 106. 
Describes Helotium aurantiacum , Cke .,011 underside of decayed leaves. U. S., 
J. B. Ellis, No. 75. Laclmella albopileata, Cke., var. subaurata, Ellis, on both 
sides of leaves of Clethra alnifolia, from J. B. Ellis, Newfield, N. J., U. S. 
299. Pearson, A. W. Experiments in treatment of the diseases of plants. Gard. and 
Forest, New York, vol. iv, No. 154, Feb. 4, 1891, p. 52. Gives, in brief, re¬ 
sults of experiments w r ith copper mixtures. Concludes copper acetate (2£ 
pounds in 25 gallons of water) as good as Bordeaux mixture for potato 
blight; iron sulphate ineffectual in treatment of grape diseases. Gives 
the formula for the mixture of copper carbonate and glue as effective against 
vine diseases (1 pound copper carbonate, 3 ounces glue, 25 gallons water). 
Reports failure to control Authracnose with the copper mixtures. 
300. Prentiss, A. N. History of the current progress of the economic study of plant 
diseases. Proc. Western New York Hort. Soc., 36th Ann. Meeting, January 
28-29,1891, Rochester, N. Y., pp. 18-21. Garden and Forest, February 11, 1891, 
vol. iv, No. 155, p. 71. Outlines history of the study in this country, men¬ 
tioning the work of Engelmann, Farlow, Burrill, Peck, Arthur, and others, 
calling attention to the work of the Department of Agriculture and of the 
Experiment Stations. 
301. Scribner, F. L. Fungous diseases of the grape and other plants (with numer¬ 
ous figures). 12mo, 134 pp., J. T. Lovett & Co., Little Silver, N. J., 1890 
(issued in 1891). The author .describes in clear, popular style the various 
diseases of plants. Gives special attention (92 pages) to the diseases of the 
grape. The work is especially adapted for the use of vineyardists and fruit¬ 
growers and fills a want which is rapidly growing. After a short introduc¬ 
tory of what fungi are, the second and third chapters are devoted to black rot 
of grapes and its treatment. The general characteristics of the malady fol¬ 
lowed by a description of the parasitic fungus are given, together with an ac¬ 
count of experiments made in its treatment. Chapter iv describes bitter rot 
(Greeneria fuliginea ) and white rot ( Coniothyrium diplodiella), with sugges¬ 
tions for treatment as in black rot. Chapter v treats of brown rot (Pero- 
nospora viticola). Chapter vi, powdery mildew ( Uncinula ampelopsidis). 
