No. 2, September, 1920] PATHOLOGY 269 



20,54. Koerner, W. F. Auf welche Krankheitsformen ist beim "Durchsehen" und "Aus- 

 hauen" der zur Saatgewinnung bestimmten Kartoffelfelder besonders zu achten. [What dis- 

 eases are to be considered especially in going through and thinning out potato fields from which 

 seed potatoes are to be selected.) Illustrierte Landw. Zeitg. 39:323-324. Fig. 258-859. 1919. 



2055. Kornautii, K. Bericht der K. K. landwirtschaftlich-bakteriologischen und Pflanz- 

 enschutzstation in Wien fur das Jahr 1917. [Report for 1917, of the Vienna institute for agri- 

 culture, bacteriology and plant piotection.) Zeitschr. landw. Versuchsw. O.-tcrr. 21: 377-393. 

 1918. — Occurrence of potato black leg and an early severe outbreak of blight (I'hytophthora 

 infcstaris) , tomato rot caused by Phytobacter lycopersicum, core rot of apple caused by Fusa- 

 rium pulrcfaciens and a disease of Picea pugcns caused by Cucurbitaria piceae. — Seeds of cu- 

 cumber, onion and bean were tested for tolerance to a variety of proprietary disinfectants. — 

 "Bosnapasta is a satisfactory preventive of cucumber mildew (P. cubensis) and scab (Clado- 

 sporJu?7i). [Through abst. by Matouschek in Zeitschr. Pflanzenkr. 29: 241-242. 1919 

 (1920).] — £>. Reddick. 



20.56. Lee, H. Atherton, and Harry S. Yates. Pink disease of citrus. Philippine 

 Jour. Sci. 14: 657-671. 7 pi., 2 fig. 1919. — -The disease is caused by Corticium salmonicolor 

 B. & Br. At present localized in a small area, hence the importance of a description of the 

 disease and the method of eradication to prevent further spread. The method of dissemination 

 is studied and recommendations are made for its treatment with lime sulphur spray. — Albert 

 R. Sivcetser. 



2057. Lees, A. H. "Reversion" of black currants. Jour. Bath and West and South 

 Counties Soc. 5, 12 : 134-135. 1917-1918.— An explanation is given as to the probable causes 

 of an abnormal lateral growth in currants, known as big bud or reversion. It is said to be 

 due to a check in terminal growth of which two cases were observed: the mite-checked ter- 

 minal and the formation of a terminal flower. The latter was found to occur on shoots that 

 were making a comparatively weak growth. — M. Shapovalov . 



2058. Lees, A. H. Further experiments on big bud mite. Jour. Bath and West and South 

 Counties Soc. 5, 12 : 137-139. 1917-1918.— Experiments were conducted to determine the num- 

 ber of sprays necessary for the control of the big bud mite, and the best time for their appli- 

 cation. It was found that 2 applications give better results than one and possibly 3 are 

 necessary. The following months were selected: (a) beginning of December, (b) beginning 

 of January and (c) end of February. A satisfactory control was obtained with a mixture 

 containing 10 per cent of soap and 5 per cent of crude carbolic acid. — M. Shapovalov. 



2059. Lees, A. H. Copper stearate. Jour. Bath and West and South Counties Soc. 5, 

 12: 139-142. 1917-1918. — A proper combination of soap and copper sulphate, called for con- 

 venience copper stearate, possesses high wetting and spreading properties. Ordinarily both 

 Burgundy and Bordeaux mixtures alone are deficient in these qualities. The wetting powers 

 of the copper soap mixture may be greatly increased by combining it with a 2 per cent par- 

 affin emulsion [kerosene]. — M. Shapovalov. 



2060. Levy, E. Bruce. Investigation of dry-rot in swedes. New Zealand Jour. Agric. 

 19: 223-228. 1919. — A dry rot disease of swede turnips (Brassica campestris) is serious in 

 certain sections and is frequently followed by soft rot. The article deals only with direct 

 control measures. The effects of various fertilizer combinations were tried and a super- 

 phosphate-guano mixture seemed to give a slight improvement. Seed from different sources 

 gave little variation in the amount of disease. A large number of varieties were tested and 

 some were found to be slightly resistant. Selection of resistant plants for seed is to be 

 practiced. — N. J. Giddings. 



2061. Lewis, A. C. Annual Report of the State Entomologist for 1919. Georgia State 

 Bd. Entomol. Bull. 55. 31 p. Fig. 2. 1920. — Contains a statement of the work conducted 

 by the Georgia State Board of Entomology, one of the main lines having been the dusting of 



