No. 4, January, 1921] PATHOLOGY 283 



1952. Owen, M. N. The skin spot disease of potato tubers (Oospora pustulans). Ki w 

 Bull. Misc. Inf. [London] 1919: 289-301. PL 11, 11 fig. 1919.— Thia is a storage disease of 

 Irish potato tubers, caused by the fungous pathogene Oospora pustulans, here described as a 

 new species by Owen and Wakefield. It is shown to be distinct from Spicaria solani 

 Harting, which name has been assigned to it by other authors. Small dark spots occur scat- 

 tered over the surface of the tuber. Infection near the eyes may kill the buds. Diseased 

 tubers should no! be planted. — E. Mead Wilcox. 



1953. Parsons, T. H. Notes on the effects of shell fire on trees in woods in France. 

 Kew Bull. Misc. Inf. [London] 1919: 231-233. PI. 6-7. 191'). 



1954. Peltier, G. L. A summary of the citrus canker investigation in south Alabama. 

 Proc. Gulf Coast Hortic. Soc. 4: 21-22. 1918. 



1955. Peltier, George L., and William J. Frederich. Relative susceptibility to citrus- 

 canker of different species and hybrids of the genus Citrus, including the wild relatives. Jour. 

 Agric. Res. 19:339-362. PL 57-68. 1920.— Continuation of previous work. (See Bot. 

 Absts. 1, Entry 924.) The tests were made both in greenhouse and in field. With a single 

 exception the data confirm those of Lee (Bot. Absts. 2, Entry 774). Pseudomonas citri has a 

 wide range of hosts and is not limited to the genus Citrus. Of the rutaceous plants not closely 

 related to Citrus, infection was secured on Casimiroa edulis, Chalcas exotica, and Claucena 

 lansium. The lesions are non-typical, unruptured spots and occur at wounds or scratches 

 on the leaves. Xanthoxylum sp. and Glycosmis pentaphylla are immune. — In the tribe Citreae 

 species in sub-tribes have been tested as follows: In Angelinae, Chaetospermum glutinosum is 

 susceptible, with lesions somewhat like those on Citrus; Aegle marmelos is slightly suscept- 

 ible; Balsamocitrus dawei and Aeglopsis chevalieri are immune. In Feroninae, Feronia limonia 

 and Feroniella lucida were infected, and lesions developed in absence of wounds. In Lavan- 

 ginae, Hesperthusa crenulata was infected on twigs and leaves, although the lesions are non- 

 typical, while Triphasia trifolia and Severinia buxifolia are immune. In Citrinae, all plants 

 tested were infected, only Citropsis schweinfurthii and Fortunella margarita, japonica and 

 crassifolia showing any marked resistance. — Only those wild relatives which were most sus- 

 ceptible in the greenhouse could be infected in the field. So far as the citrus industry of U. 

 S. A. is concerned none of the wild relatives, native or introduced, now growing in the citrus 

 districts is susceptible enough to have any bearing on the national program for the eradica- 

 tion of citrus canker. A possible exception is Poncirus trifoliata. — The species of Citrus 

 show no change in relative susceptibility from previous report. Citrus nobilis and its varie- 

 ties are resistant. — Of the hybrids, those having Poncirus trifoliata as one parent are sus- 

 ceptible; citrange hybrids, particularly citrangequats, are decidedly resistant. — All false 

 hybrids are extremely susceptible. — D. Reddick. 



1956. Putterill, V. A. Flag smut of wheat. Jour, of Dept. Agric. Union of South 

 Africa, 1 : 252-257. 5 fig. 1920. — Flag smut in wheat, caused by Urocystis tritici, has re- 

 cently been recorded from Zeerust district. An outline is given of the life history of the 

 fungus, and preventive measures are suggested. — E. M. Doidge. 



1957. Rambousek, Fr. Riibenschadlinge und Riibenkrankheiten im Jahre 1917. [Ene- 

 mies and diseases of beets in 1917.] Zeitschr. Zuckerind. Bohmen 42: 527-539. 1918. 



1958. Ritzema Bos, J. Boekaankondiging. [Book review.] [Rev. of : J. Kok. Vijanden 

 van landbouwgewassen. (Enemies of cultivated plants.) 2d. ed. 1919.] Tijdschr. Plantenz. 

 26: 115-116. 1920. — The contents of the work are divided into three parts, the first dealing 

 with injuries due to the environment; the second, injuries due to animals including insects; 

 and the third part dealing with diseases due to pathogenic plants, especially the fungi. A. 

 list of errors and misstatements found in the book is given. — H. H. Whetzel. 



