June, 1920] PATHOLOGY 375 



2565. Bkauverie, J. Sur quelques recherches recentes concernant le role des germes de 

 rouilles contenues dans les semences de Graminees. (Some recent investigations concerning 

 the role of rust spores contained in grass seeds.) Bull. Soc. Path. Veg. France 5: 83 90. 1918. 

 [Issued April, 1919.] — In the case of rust attacking seeds of grasses the parasite is always local- 

 ized in the pericarp and does not reach the embryo. Author holds that the spores found on 

 grain provide ameans of insuring their propagation from year to year especially in cases where 

 no aecia occur as in Pticcinia glumarum. Uredinospores found on seed in the spring did not 

 germinate. Teliosporcs were frequently found but have not, been tested. The work of 

 Carleton, Zukal, Gassner and Htjngerford is referred to. The negative results reported 

 by authors arc not considered conclusive and the probability of transmission by contaminated 

 seed is maintained. — C. L. Shear. 



25G6. Biers, P. Un Heterodera parasite de Gomphocarpus fruticosus. [Heterodera para- 

 sitic on Gomphocarpus.] Bull. Soc. Path. Veg. France 6: 18-19. 1919. — A nematode which is 

 regarded as a biologic form of Heterodera radicicola is reported on this host from Nice. — C. L. 

 Shear. 



2567. Berg, Anthony. A simple method of distinguishing nematode galls of wheat from 

 bunted kernels. Phytopath. 9: 181-182. 1919. — Bunt infected kernels show an apical tuft 

 of hair or brush. The nematode affected kernels have no brush and may be indented. They 

 frequently form multiple kernels. — R. E. Vaughn. 



2568. Bethel, Ellsworth. Puccinia subnitens and its aecial hosts. Phytopath. 9: 

 193-201. 1919.— Based on author's observations and cultures of the writer up to January 1, 

 1919, the total number of aecial hosts of Puccinia subnitens for California, Colorado, Arizona, 

 and New Mexico, is 76 species. These are of 48 genera and belong to 19 families. Including 

 the collections of others, and from other localities, this number is increased to 84 host species, 

 in 52 genera, belonging to 19 families. These hosts extend through the herbaceous dicotyl- 

 edons from Polygonaceae to Lobeliaceae. Cultures show no racial tendencies. The aecia 

 vary greatly in form even on the same plant. The chief telial host is Dislichlis spicata. — 

 G. Wineland. 



2569. Biers, P.-M. Le Coprinus radicans (Desm.) Fr. est-il parasite? [Is Coprinus radi- 

 cans a parasite?] Bull. Soc. Path. Veg. France 6: 72-74. May-June, 1919.— The mycelial 

 condition of the species mentioned has been regarded as a golden yellow growth generally 

 referred to Ozonium and sometimes specifically to 0. auricomum Link. The author records 

 observations on the occurrence of Ozonium associated with this Coprinus on chestnut (Cas- 

 tanea) and poplar (Populus) under conditions suggesting its parasitic nature. — C. L. Shear. 



2570. Billando, Emilio. Las enfermedades del garbanzo. [Diseases of the chick-pea.] 

 Informacion Agric. [Madrid] 9 : 194. 1919. — This important Spanish crop is seriously attacked 

 by insect pests and a fungous disease. This latter (species undetermined) is controlled by 

 treating the seed before planting with copper sulphate solution and by spraying the crop three 

 times with Bordeaux mixture. Late planting also helps to minimize losses. — John A.Stevenson. 



2571. Bisby, G. R., and A. G. Tolaas. Good results from spraying in Minnesota. Po- 

 tato Mag. 2 1 : 12-13. 2 fig. 1919. — Bordeaux mixture increases yield regardless of late blight 

 (Phytophthora infestans-). — Donald Folsom. 



2572. Blair, W. Saxby. Dusting fruit trees for insects and disease. Agric. Gaz. Canada 

 6: 16-18. 1919. — A report is given on the amount of scab and insect injury in an orchard of 

 Gravensteia apple trees where two methods of treatment were used. The standard lime- 

 sulphur arsenate liquid spray was compared with the fine sulphur powder combined with dry 

 arsenate of lead as a dust. The two methods showed little difference in efficiency in control- 

 ling scab and insects. Dusting was more expensive in cost of material, but is a time saver. 

 It seems to be a personal question with the grower whether he can dust more profitably than 

 spray. — 0. W. Dynes. 



