306 
777. S.-. [The violet disease.] <(Am. Florist, vol. vn, Chicago and New York, 
Jan. 28, 1892, p. 522, j- col. 
States trouble to spread most rapidly in weather with extreme and sudden changes in 
temperature. Believes careful cultivation will be eifectual preventive. Notes similar 
trouble with chrysanthemums. (J. F. J.) 
778. [Sanders, Edgar.] The carnation rust. <Trairie Farmer, vol. lxiv, Chicago, 
Mar. 5, 1892, p. 151, f col. 
Refers to paper by Arthur (see No. 770) and states that disease may be combated with sul¬ 
phate of iron (Jto \ pound to a gallon of water), by Bordeaux mixture (probably), and also 
by ammoniacal copper carbonate. (J. F. .1.) 
779. Southworth, E. A. Additional observations on anthracnose of the hollyhock. <Monr. 
Mycol., vol. vi, Washington, Jan. 6, 1891, pp. 115-116. 
States that a fungus similar to that of diseased hollyhocks has been found in Kansas on 
Sida spinosa. Thinks it probable the species should be known as Collctotrichum malvarum 
(Br. and Casp.). Notes also that C. bromi Jennings from lexas may be same as Steirochcete 
graminicola (Ces.) Sacc. (J. F. J.) 
780. Southworth, E. A. A new hollyhock disease. <Monr. Mycol., vol. vi., Washing¬ 
ton, Sept. 10, 1890, pp. 45-50, pi. 1, (hi.) 
Describes damage occasioned by a new disease of Hollyhocks, caused by Colletotrichum 
althcece n. sp. Gives external and botanical characters and recommends Bordeaux mixture 
as a remedy. (J. F. J.) 
(See also Nos. 843 and 971.) 
D. —REMEDIES, PREVENTIVES, APPLIANCES, ETC. 
781. Alwood, William B. Current notes. ^Southern Planter, 51st year, Richmond, 
Va., June, 1890, pp. 274-276. 
Notes treatment of apple scab and black rot of grapes in Albemarle County, Ya., and re¬ 
fers to fact that he prepared a bill against peach yellows which was passed with serious 
amendment by the legislature. (D. G. F.) 
782. Alwood, William B. Notes on treatment of grapes. ^Southern Planter, 52d 
year, Richmond, Va., May, 1891, p. 249, 1^ col. 
Gives instructions for treatment of grape diseases by use of ordinary copper compounds. 
(D. G. F.) 
783. Alwood, William B. Standard fittings for spray machinery. <Ynsoct Life, vol. 
iv, Washington, Oct., 1891, pp. 58-59. 
Brief report of committee appoiuted to confer with makers of spraying machines to secure 
standard sizes of styles and fittings for machines. (J. F. J.) 
784. Alwood, William B. Treatmentof black rot of grapes. Note on Bordeaux mixture—A 
modification of the copper carbonate preparation. ^Southern Planter, 51st year, 
Richmond, Va., Oct., 1890, p. 462, 2 cols. 
Claims to have discovered that it required only 1J parts of quicklime to neutralize 1 part 
of copper sulphate and discovered independently of several French investigators that the 
formula might be reduced. Gives the reduced formula as 2 pounds of copper sulphate and 
pounds of lime. (Turns priority in the preparation of the well known “Masson ” mixture 
of copper carbonate f rom copper sulphate and sodium carbonate. Gives as date of discovery, 
spring of 1888. [See Patrigeon, G. Prog. Ag. et Vit. 4 anne 3 Juillet, 1887, p. 17.] (D.G.F.) 
785. [Anon.] Apple scab. <Am. Agric., vol. li, New York, Feb., 1892, p." 139,£ col. 
Notes that “black mildew” of a correspondent is probably apple scab (Fusicladium den- 
dritieum). Gives statement of how to treat disease, using solution of 4 pounds sulphate of 
iroq to 4 gallons of water. (J. F. J.) 
786. [Anon.] Bordeaux mixture for potato diseases. <Agric. Journ. Dept, of Agric. 
of Cape Colony, vol. iv, Cape Town, Jan. 14, 1892, p. 160, \ col. 
A paragraph credited to the Standard states that “unless the sulphate of copper is 
neutralized by the admixture of a sufficient quantity of good and fresh quicklime, it is in¬ 
jurious to vegetation. ” The mixture should show no acidity when tested by means of 
litmus paper. Equal proportions of lime and copper sulphate are recommended instead of 
one part of lime to two of copper sulphate as formerly advised. ( W. T. S.) 
787. [Anon.] Machines and processes for destroying insect and fungus pests. <Wgri. 
Gaz. N. S. Wales, vol. li, Sydney, Feb., 1891, pp. 79-81. 
A classification of machines and award of certificate of merit to manufacturer of the best 
machine. (M. V.) 
788. [Anon.] Mildew in grapes. <Am. Agric., vol. l, New York, Mav, 1891, pp. 
298-299, i col. 
Refers to powdery and downy mildew, recommending for the former sulphuring and for 
the latter ammoniacal solution of copper carbonate. Gives formula for the same. (J. F. J.) 
