174 
506. [? Masters, M. T.] The potato disease. Gard. Cliron., 3d ser., vol. 10, Oct. 24, 
1891, p. 490, | col. States that tubers of potatoes whose foliage had been 
treated with copper were submitted to chemical analysis, and less than one- 
liundredth grain of copper per pound wa s found, the same as in the untreated. 
(M. B. W.) 
507. McCarthy, Gerald. Plant diseases and how to combat them. Bull. North Caro¬ 
lina Agric. Ex. Sta., No. 76, Raleigh, Mar.,*1891, pp. 20. Gives popular 
review of what fungi are, general means of prevention, sanitary, etc. Gives 
formulae of fungicides, pointing to error in translating value ot hectoliter of 
the French into 22 gall. English measure, instead of 26| gall. U. S. standard. 
Following mixtures described: Simple solution of copper sulphate, simple 
solution iron sulphate, Bordeaux mixture, modified eau c61este, Burgundy 
mixture modified (cop. sulphate, 2^ lbs.; sodium carbonate, 3£ lbs.; hard soap, 
one-lialf lb., water, 22 gallons), ammoniacal solution, NessleFs powder (cop. 
sulphate, 1 lb.; air-slaked lime, 2 lbs.; road dust or gypsum, 10 lbs.; water, 1 
gallon). Discusses spraying machinery, protection afforded by wooden 
covering to trellises, and the diseases of black rot ( Lcestadia Bidwellii), mildew 
(Peronosporaviticola), anthracnose ( Spliaceloma ampelinum), black knot ( Plow - 
rigktia morbosa), peach rot ( Monilia fructigena), apple scab ( Fusicladium den - 
driticum), pear-leaf blight ( Entomosporium maculatum), pear fire-blight, peach 
yellows, potato blight (Phytoplithora infestans), rust of cereals (Puccini a 
graminis), smut of small grains (Tilletia fcetens and Ustilago segetum), corn 
smut ( Ustilago maydis) ergot (Claviceps purpurea). (D. G. F.) 
508. McCarthy, Gerald. Spraying, its value and danger. Cult, and Country Gent., 
vol. 56, No. 2000, Albany, June 11,1891, p. 477, 2 cols. Southern Planter, 52d 
year, Richmond, Aug., 1891, p. 430. Notice of paper on “copper salts, a pos¬ 
sible source of danger” published in Agric. Science, vol. 5, June, 1891, pp. 
156-158. See No. 295. (D. G. F.) 
509. Pammel, L. H. Treatment of fungus diseases. Bull. Iowa Agric. Ex. Sta., No. 13 
[Ames], Des Moines, May, 1891, pp. 31-51, figs. 22. Summarizes work upon 
treatment of black rot of grapes and pear leaf-bliglit; gives formulae and 
cost of fungicides; apparatus for their application. Reports the failure of 
two sprayings of Bordeaux mixture and one of ammoniacal solution to pre¬ 
vent the apple rust ( Bcestelia ) and also the negative results from an experiment 
in the treatment of plum rust. Septoria ribis and Ccrcospora angulata more 
or less successfully treated with one spraying of Bordeaux and two of am¬ 
moniacal solution. Gives results of an experiment in the use of Bordeaux 
mixture and ammoniacal solution in the treatment of Cylindrosporium padi, 
Karsten (spot disease of cherry.) Brief instructions as to the treatment of 
apple scab, strawberry leaf-blight, spot disease of the cherry and plum, pear 
leaf-bliglit, spot disease of currants, and potato rot. (D. G. F.) 
510. Pearson, A. W. Copper salts and vegetation. Garden and Forest, vol. 4, No. 191, 
New York, Oct. 21,1891, pp. 498-500, li cols. Shows danger of excessive use of 
copper salts as fungicides, giving results of treatment of Peacliblow potatoes 
continuously with Bordeaux mixture. Finds in treatment of corn with cop¬ 
per sulphate, of potato seed with Bordeaux mixture, and sweet potatoes in 
the hotbed that their germination was seriously retarded. Sweet potatoes 
planted in hotbeds following seed previously treated with Bordeaux mixture 
failed to sprout. Thinks the surface-feeding plants, weeds, etc., in treated 
vineyards have been affected by the use of the copper fungicides. (D. G.F.) 
511. Periam, Jonathan. Strawberry leaf-blight fungus. Prairie Farmer, vol. 63, No. 
36, Chicago, September 5, 1891, p. 566, one-half col., fig. 1. Gives popular 
extract from Bull. Ky. Agric. Ex. Sta. See No. 197. (D. G. F.) 
512. Petermann, M. Treatment of potato disease. Agriculture Science, vol. 5, No. 7, 
July, 1891, pp. 182-183. Reviewed from Jour. d*Agric. prat., vol. 55, Bruxelles, 
Jan., 1891, pp. 499-501. Shows effectiveness of Bordeaux mixture (50 kilos 
