550 EXPERIMENT STATION RECOED. 



portance of the diseases of economic plants. A bibliography of 165 titles Is 

 appended. 



A handbook of th.e fungus diseases of West Indian plants, K. Bancroft 

 (London, 1910, pp. 10, pis. 6). — This is a compilation of the common diseases of 

 economic plants of the West Indies, including discussions of the pathological 

 effects caused by these fungi, brief taxonomic descriptions of them, and reme- 

 dies for their control. 



The control of plant diseases, H. H. Whetzel (New York Cornell Sta. Bui. 

 283, pp. 4S0-.'i9S, figs. 11). — The symptoms of the principal diseases of orchard, 

 truck, and field crops are given, together with directions for their control. 



On plant diseases, especially of agricultural crops, M. L. Morten sen 

 {Plantesygdomme og disses Bekcempclse saiiig Jios Landbrugsplanterne. 

 Slagelse, 1910, pp. 31). — This is a popular discussion of the plant diseases 

 commonly met with in agricultural crops in Denmark, together with methods 

 for their control. 



Observations on diseases of agricultural crops, F. K. Ravn (Tidsskr. 

 Landhr. Planteavl, 16 {1909), No. 5, pp. lSS-758).— In a lecture before the 

 Royal Agi'icultural Society of Denmark a general resum§ is given of the annual 

 reports published on the subject of plant diseases in Denmark by E. Rostrup 

 from 1884 to 1905 and by the author from 1906 to 1908. 



New species of Uredineae, VII, J. C. Arthur {Bid. Torrey Bot. Club, 37 

 (1910), A'o. 12, pp. 569-580, fig. 1). — The author describes 15 new species and 

 combinations of rusts, among which may be noted Puccinia deschampsicB on 

 Deschampsia cwspitosa from Colorado, Uromyces glycericB on Glyceria sep- 

 tentrionalis and G. acutiflora, and Peridemiium fructigenum on Tsuga cana- 

 densis from Connecticut. 



Cultures as a means for a better differentiation of the systematic position 

 of certain Hyphomycetes, O. Appel and H. W. Wollenweber (Ber. Deut. Bot. 

 Gesell, 28 (1910), No. 8, pp. Jf35-U8, pi. 1, figs. 2).— As a result of cultures on 

 various media, such as iX)tato stems and tubers, peas, beans, etc. of certain 

 species of the Hyphomycetes, especially of the genus Fusarium, the authors 

 claim that the various stages in the life cycle of the fungus under culture can 

 often be discovered. Especially may the perfect stage of many of the imper- 

 fect fungi and variations in the spores be thus determined. 



On the biology of Sclerospora, a parasite of the Gramineae, V. Peglion 

 (Centhl. Bakt. [etc.], 2. AU., 28 (1910), No. 22-21,, irp. 580-589, figs. 6).— The 

 author discusses the effects of various species of this genus on their respective 

 hosts, special attention being given to malformation of the spikes of Setaria 

 viridis, and the production of witches' brooms on Glyceria festucceformis, 

 Crypsis aculeata, C. alopecuroides, and C. schonoides by Sclerospora macrospora. 



The susceptibility of certain cereals to smut, L. S. Klinck (Ann. Rpt. 

 Quebec Soc. Protec. Plants [etc.]. 2 (1909-10), pp. 14, 15).— As a result of two 

 years' experiments on smut infection it is claimed that the following factors 

 play an important part in determining the amount of smut, viz : Season, class 

 of grain, variety, strain, date of seeding, size of seed, rate of seeding, date of 

 cutting, and manner of planting. 



Investigations on the behavior of smut spores in the bodies of animals 

 and in stable manure, F. Honcamp, H. Zimmermann, and G. Schneideb 

 (Centbl. Bakt. [etc.], 2. Abt., 28 (1910), No. 22-24, pp. .590-607).— Tests were 

 made on the viability of bunt spores (Tilletia Iwvis and T. caries) after pas- 

 sage through the digestive tract of swine, cattle, horses, sheep, rabbits, chick- 

 ens, and pigeons, and also on the possibility of infection in the field by the use 

 of stable manures contaminated with smut spores. 



