DISEASES OF PLANTS. 145 



the Safe Transportation of Dangerous Explosives in order to obtain data upon 

 wliicli specifications and claanges in tbe design of wooden barrels used in the 

 transportation of dangerous liquids might be based. 



DISEASES OF PLANTS. 



The organization in various countries of the service for the protection 

 of plants, J. jNI. Saulnieb {Lc Scrviee de Protection dcs Plautcs lUnis les 

 Divers Pays. Rome: Internat. Inst. Agr., IDIJ,, 2. eiL, pv. XIII+305, jjI. 1, fig. 

 1). — This monograph gives the organization of different countries relating to 

 the study of fungus and insect parasites of plants, rules for inspection, etc., 

 follovi^ing the general plan previously noted (E. S. R., 26, p. 445). 



In addition to the countries reported in the previous edition, there are in- 

 cluded in the present monograph Argentina. Austria, Hungary, Brazil, Costa 

 Kica, EgjT)t, United States, Algeria, New Zealand, Union of South Africa, 

 Greece, Guatemala, Japan, Norway, and Servia. 



Problems and progress in plant pathology, L. R. Jones (Amer. Jour. Bot., 

 1 {1914), No. 3, pp. 97-111). — This is an address delivered by the author as the 

 retiring president of the Botanical Society of America, read at the Atlanta 

 meeting December 31, 1913, in which a review is given of recent progress in the 

 investigation of plant diseases, particular attention being paid to Ajnerican 

 investigations. Some of the problems of disease control are pointed out. 



Agricultural bacteriology, special inquiries, C. M. Hutchinson (Ann. Rpt. 

 Bd. Set. Advice India, 1012-13, pp. 126-128). — Notes are given on the rice dis- 

 ease due to nematodes, a brief account of which has been noted by Butler 

 (E. S. R., 30, p. 49), an indigo disease which is apparently of bacterial origin, 

 and a potato rot. From rotting tubers two bacteria were found invariably 

 present and the rotting of the tubers took place in the presence of these bac- 

 teria wherever the dry tubers had suffered mechanical injury, or where un- 

 injured tubers were kept in a moist condition for a few hours. 



Notes on some rusts in India, E. J. Butler (Ann. MycoL, 12 {191^), No. 1, 

 pp. 76-S2, figs. .}). — Descriptions are given of leaf rusts named as follows: 

 Kuehneola fici on Fieus glomerata, Coleosporiuni oldenlandiw on Oklenlandia 

 aspera, and Puccinia kiihnii on Saecharum spontaneum. 



The ascosporic condition of the genus Aschersonia, R. Thaxteb (Bot. Gas., 

 57 {WW, No. 4, pp. 308-313, fig. i).— The author has made a study of some of 

 the species of entomogenous fungi in Trinidad and describes the ascosporic stage 

 of A. turbinata. 



The Plasmodiophoracese and their relationship to the Mycetozoa and the 

 Chytrideae, E. J. Schwartz (Ann. Bot. [London], 28 (IDL'i), No. 110, pp. 227- 

 240, pi. 1). — As a result of a cytological and life history study of the species of 

 PlasmodiophoraceiE, the author agrees with Maire and Tison (B. S. R., 21, p. 

 423; 25, p. 43) that the Plasmodiophorace?e should form a separate order inter- 

 mediate between the Sporozoaires and Myxomycetes. He also describes three 

 jjew species of Ligniera as follows: L. heUidis on roots of Bellis perennis, L. 

 menthw on Mentha puJegium, and L. alismatis on Alisma plantago. All the 

 species of this genus are said to be root parasites and infection takes place 

 near the root tips. They are said not to cause hypertrophy in the host plants 

 and on this account are somewhat difficult of recognition. 



A bibliography is appended. 



North American TJredineae, E. W. D. Holway {Minneapolis, Minn., 1913, 

 vol. 1, pt. Jf, pp. 81-95, pis. 8). — The author describes the species of Puccinia 

 occurring on the Araliacece, Umbelliferse, and Cornaceae of North America. 



