848 EXPEEIMENT STATION RECORD. 



Where plants were grown in sterilized soil no fungus was found in conjunction 

 with the nodules, but it was present in most of the other cultures, and except 

 in the youngest nodules there was a rich development of proteids. Notes are 

 also given on the occurrence of " air roots " on the royal and some other palms. 



New diseases of cultivated plants, A. Puttemans {Bui. Soc. Roy. Bot. Belg., 

 48 (1911), No. 4, PP- 235-2Jf7, :^gs. 3). — Three diseases are reported from Brazil 

 as found there, usually on introduced plants, rarely on native species. A spot 

 disease of begonia is claimed to be due to a new fungus here described as 

 O'idium hegonice. A cauliflower disease is ascribed to Alternaria hrassicw. 

 A parasite, found to cause a leaf spot of Chrysanthemum indiciim, is described 

 as a new species under the name Cercospora chrysanthemi. 



Plant diseases, 1909-10, A. Osterwalder and O. Schneider-Orelli (Landto. 

 Jahrb. Schiveiz, 26 (1912), No. 6, pp. 275-279). — A report is made concerning a 

 large number of diseases due mostly to fungi noted in A-arious localities as 

 affecting fruit trees and fruits, grai)es, vegetables, berry crops, and forest trees. 



The influence of nutrition and weather upon plant diseases, L. Hiltner 

 (Jahrl). Dent. Landw. Gesell., 27 (1912), No. 1, pp. 156-169, pi. i).— Details are 

 given of studies on several crops, leading to the conclusion that the known 

 relation between weather and certain plant diseases consists not alone in the 

 influence of weather upon disease-producing agencies directly, but also in its 

 influence upon the plant itself and especially upon its nutrition. 



The action of some acid salts upon the development of Aspergillus niger, 

 A. KiESEL (Compt. Rend. Acad. Sd. [Paris], 155 (1912), No. 2, pp. 193-196).— A 

 study was made by the author on the effects of 27 acids and acid salts on 

 A. niger ascertaining in case of each the concentrations necessary to arrest, 

 respectively, germination of eonidia, development of mycelium, and fructifica- 

 tion. The details are given in tabular form. 



Contribution to the study of the sooty molds, G. Arnaud (Ann. Ecole Nat. 

 Agr. MontpclUer, n. ser., 12 (1912), No. 1, pp. 23-5'i, figs. 13). — In extension of 

 previous woi'k (E. S. R., 25, p. 452), the author gives detailed results of his 

 studies, both morphological and physiological, on a number of species of the 

 sooty mold, including the relations of certain of these molds to honeydew. 



Studies in Chinese fungi, I. Miyake (Bot. Mag. [Tokyo'], 26 (1912), No. 

 303, pp. 51-66, pi. 1; abs. in, Internat. Inst. Agr. [Rome], Bui. Bur. Agr. Intel, 

 and Plant Diseases, 3 (1912), No. 7, p. 1675). — Among the species of fungi dis- 

 cussed are many parasites of economic plants. Of these nine, claimed to be new, 

 are described under the following names and in connection with the following 

 hosts: Cercospora aleuritidis, on leaves of Aleurites cordata; Helminthosporium 

 sapii, on leaves and leafstalks of Sapiutn sebiferum; H. sesami, on leaves of 

 Sesamum indicum; Brachysporium phragmitis, on leaf nervures of Phragmitis 

 communis ; Septoria amphigena, on leaves of Buplenrum falcatum; S. piri, on 

 leaves of Pyrus sinensis; Nothopatella chinensis, on branches of Broussoneiia 

 papyrifera, Primus persica, and Morns alba; Coniothyrium ki'aunJme, on leaves 

 of Kraunhia floribnnda; Macrophoma sophoro', on leaves of Sophora japonica; 

 Ustilaginoidca penniseti, on glumes of Pennisetum compressum. Some of these 

 are thought to be very destructive. 



A review of grain diseases, 1911, E. Riehm (Centbl. Bakt. [etc.], 2. Abt., 

 Slf (1912), No. l'i-17, pp. ^3.'/-.'/7;2). — This is a comprehensive review of the 

 literature of grain diseases and pests during 1911, with an extensive bibliog- 

 raphy covering the year. 



Control of loose smut of barley and wheat, R. Schandee (Kaiser Wilhehns 

 Inst. Landw. Bromberg, Abt. Pflanzenkrank. Flugbl. 16,1912, pp. J,, fig. 1).— This 

 is a brief discussion of apparatus and methods for application of the hot-water 



