CLINTON: NORTH AMERICAN USTILAGINEAE. 
513 
(Lists and describes smuts from South America, a number of which are 
new; some of these had been listed by Schroter but never described.) 
82. Hennings, P. Neue von E. Ule in Brasilien gesammelte Ustilagineen 
und Uredineen. Hedw., Beibl., 38 : (65-07). 1899. 
(Describes several new species and one new genus, Polysaccopsis.) 
83. Hennings, P. Eininge Beobachtungen liber das Gesunden pilzkranker 
Pflanzen bei veranderten Kulturverhaltnissen. Zeits. Pflanzenkrank., 13 : 
41-44. 1903. 
(Notes gradual disappearance of smuts from infected plants after trans¬ 
planting in botanic garden.) 
84. Herzberg, P. Vergleichende Untersuchungen liber landwirthschaftlich- 
wichtige Flugbrandarten. Zopf Beitr. Phys. Morph. Organ., 5: 1-36. 
1895. Illustr. 
(Treats especially of cultural experiments with Ustilago Jensenii , U. 
Avenae, U. perennans , U. Tritici, U. Hordei ; makes a new genus, Ustila- 
gidium, in which are placed U. Tritici and U. Hordei.) 
85. Hitchcock, A. S., and Norton, J. B. S. Corn Smut. Bull. Ivans. Agr. 
Exp. Sta., 62 : 169-212. 1896. Illustr. 
(Give extended botanical account of Ustilago Mays-zeae , including 
damage, prevention, literature, etc.; also treat briefly of U. Reiliana.) 
86. Hollrung, M. Die Verhiitung des Brandes insbesondere bei Gerste und 
Hafer duch die Saatkornbeize. Landw. Jahrb., 26 : 145-190. 1897. 
(Discusses at length the literature relating to the prevention of the cereal 
smuts by seed treatment; gives original data concerning certain treat¬ 
ments on the germination of the seeds and the prevention of the smuts 
of barley and oats.) 
87. Hume, H. H. Ustilaginae of Iowa. Proc. Iowa Acad. Sci., 9: 226-240. 
1902. 
(Lists 50 species with their hosts and distribution, giving notes on some ; 
places Ustilago sphaerogena under Cintractia; names Ustilago Arthurii , 
Tilletia subfusca , Entyloma leuto-maculans , E. Rammelii as new species 
but without special specific descriptions.) 
88. Jensen, J. L. Om Ivornsorternes Brand. Copenhagen. 1888. 
(Deals with the prevention of smuts by hot water treatment of the seed, 
of which he was the first chief investigator.) 
89. Jensen, J. L. Le Charbon des Cer6ales. Copenhagen. 1889. 
90. Johnson, T. Experiments in the Prevention of Smut, Ustilago Avenae 
(Jens.), in Oats. Econ. Proc. Roy. Dublin Soc., 1 : 119-131. 1902. 
(Gives account of experiments with formalin, hot water, sodium sul¬ 
phide, and potassium sulphide ; especially recommends the last two.) 
91. Juel, H. O. Ustilaginei. Bih. K. S. Vet.-Akad. Handl., 23, afd. 3 9 : 7—11. 
1897. 
(Describes Cintractia axicola f. spicularum , n. nom., and Testicularia 
Cyperi var. minor , n. var.) 
92. Kellerman, W. A., and Swingle, W. T. Preliminary Report on Smut 
in Oats. Bull. Ivans. Agr. Exp. Sta., 8 :91-104. 1889. Illustr. 
(Give an account of oat smut, especially of experiments in treating seed 
for its prevention ; also have note on stinking smut of wheat.) 
