198 PATHOLOGY [Box. Absts., Vol. X, 



Louisiana, and experimental tests of rogueing as a control measure. Also experiments 

 ■vfith fertilizers and tests with various seedling canes are described. — C. W. Edgerton. 



1312. GuBA, E. F. Effect of dormant lime sulfur upon the control of apple blotch. Science 

 53 : 484-485. 1921. — The writer questions the reported controlling of apple blotch {Phyllosticta 

 solitaria) by 1 spraying before the buds swell and attributes its failure to the fact that only 

 the spores and sporidial layer within the pseudo-pycnidia are killed, the new infectious area that 

 advances from the initial canker in the spring being unharmed. — C. J. Lyon. 



1313. HowiTT, J. E. Experiments with Haskell's method or the so-called dry formaldehyde 

 treatment for the prevention of oat smut. [Abstract.] Phytopathology 11 : 203. 1921. — This 

 method of treating oats has proved very satisfactory. Its chief points of advantage over the 

 older methods are simplicity, and rapidity and ease of application. — B. B. Higgins. 



1314. Kress, Otto, and C. J. Humphrey. Progress report on the study of wood and wood 

 pulp infection and decay. Paper Indust. 2:691-694. 1920. — Specific directions are given for 

 storing pulp wood and pulp so as to prevent decay. The results of paper-making tests on de- 

 cayed pulps and of comparative pulping tests on infected and sound wood are included. — H. N. 

 Lee. 



1315. Kress, Otto, C. J. Humphrey, and C. Audrey Richards. Some observations 

 on the deterioration of wood and wood pulp. Paper Indust. 1:526-531. 11 fig. 1919. — Physical, 

 chemical, and paper-making characteristics of clean and of decayed pulps are described, causes 

 of decay and remedial measures are discussed, and characters by which molds may be distin- 

 guished from wood-destroying fungi are given. — H. N. Lee. 



1316. Lochhead, W. A quarter century of lime-sulphur. Canadian Hort. 44: 1-24. 1921. 



1317. Manuel, H. L. Black spot or anthracnose. Agric. Gaz. New South Wales 32: 581- 

 582. 1921. — The writer describes anthracnose disease (Gloeosporium ampelophagum) of the 

 vine (Vitis spp.), which has been severe in certain areas, and discusses methods of control. 

 He recommends swabbing the vines with the following preparation : 50 pounds sulphate of iron 

 dissolved in | gallon sulphuric acid in 10 gallons of water. — L. R. Waldron. 



1318. Nishikado, Y., and C. IMiyake. Momitane no sh6doku narabinilne Gomahagarebyd 

 no Yoboho. [On seed treatment of rice against sesame-spot leaf blight.] I. Momidane no 

 Onto Shinsekiho. [Hot-water treatment of seed rice.] Byochtl-gai Zasshi (Jour. Plant Pro- 

 tection Japan) 5: 693-712 (1-20). 1918. — Helminthosporiurn oryzae, a serious disease oi rice 

 seedlings, is spread largely by means of conidia carried on the seed grain. Experiments have 

 shown that the conidia can be destroyed by treatment with hot water at 4S-50°C. for 10 minutes. 

 A preliminary soaking in cold water reduces the resistance of the grain to heat, although long 

 continued soaking in water at 15°C. followed by a 10 minute immersion in hot water at 50-52°C. 

 did not result in lowered germination. To control the disease immersion of seed grain for 10 

 minutes in hot water at 52°C. or for 5 minutes at 54°C. after a preliminary soaking of 24 hours 

 in cold water is recommended. — Masao Yoshikawa. 



1319. Pennington, L. H., W. H. Snell, H. H. York, and Perley Spalding. Investiga- 

 tions of Cronartium ribicola in 1920. Phytopathology 11: 170-172. 1921. — A summary and a 

 brief discussion are given of the results obtained during the year by various investigators. 

 The results show that large areas of Ribes are sometimes killed by the fimgus. Hence the 

 absence of Ribes from an infected area may not mean that it has never been present. The 

 writers confirm previous conclusions that aeciospores may be blown an indefinite number 

 of miles and remain infectious. — B. B. Higgins. 



1320. Pennington, S., and H. G. Robinson. Spraying of potatoes for "blight" or "potato 

 disease" (Phytophtborainfestans). Bull. Univ. Coll. Pleading 30. 8p. 1921. — The experiments 

 described by the authors represent a record of 9 years' systematic trial of ordinary field spray- 



