132 
146. Harkness, H. W. Dangerous fungi. Zoe, San Francisco, Cal., July, 1890, Vol. I, 
No. 5, p. 150. Gives localities in California where Peronospora viticoJa, PIow- 
riyhtia morbosa, Taplirina ( Exoascus) pruni are destructive. Notes freedom of 
Primus ilicifoHa from disease. 
147. -. Fungi collected byT. S. Brandegee in Lower California. Proc. Cal. Acad. Sci., 
Second Series, Vol. II, 1889, December 20, 1889 (distributed 1890). Names 14 
species, describing as new, Pucdnia ornata, Hark, with Plate XII on Tacoma 
stans, Commondu. Related to P. medusce, Speg., differing in size, 
148. Harvey, F. L. The potato rot (P. infestans). Ann. Rep. Maine Ag. Exp. Sta., 
1889 (1890), Bangor, Me., pp. 173, 181 (with plate by C. H. Fernald figuring 
so-called oospores). Gives origin, history, primary causes, secondary causes, 
conditions of growth, description, life-history, and remedies, direct and pre¬ 
ventive. 
149. -. Apple scab. Ibid., pp. 182,184 (with plate copied from U. S. Dept, of Ag. 
Report, 1887). Reviews work done by Taft in Michigan and Goff in Wis¬ 
consin (see 42 and 104). . 
150. Hickman, J. F. Smut in wheat. Bull. Ohio Ag. Exp. Sta., Second Series, Yol. 
III, No. 6, July, 1890, p. 205. Reports unusual abundance of stinking smut, 
with table of percentages of smut estimated in field, and counts of the number 
of smutted grains in 1,000 grains after threshing, also result of use of too 
strong solution of copper sulphate. 
151. Howell, Miss J. K. Trimorphism in Uromyces trifolii. Bot. Gaz., September, 1890, 
Vol. XV, No. 9, p. 228. Abstract of paper read before A. A. A. S. Botanical 
Section, August 19, 1890. Records cultures made to determine connection of 
the three forms. Finds tecidiospores germinatiug throughout the winter. 
Proves the relationship beyond question. 
152. Humphrey, J. E. Mildews. Trans. Mass. Hort. Soc. 1889, Pt. I, 1890, Boston, 
Mass., pp. 40, 52. Gives statement of object of new department of vegetable 
physiology connected with station. Describes in clear popular language the 
growth, life-history, and means of combating the powdery mildews ( Perono - 
sporaceev). Notes Pi/thophthora infestans, DBy., Peronospora viticola, B. & C., 
P. gangliformis, Tul., P. graminicola, Sacc. on Hungarian grass or millet, P. 
Schleideniana, Ung. 
153 Kean, A. L. On the nature of certain plant diseases. Bot. Gaz., Vol. XV, No. 7, July 
22, 1890, p. 171. Notices peculiar habits of Bliizopas nigricans with reference 
to parasitism on sweet potatoes. Claims the discovery of an active “ fer¬ 
ment, ” excreted by fungal hyj)hm, which precedes the growth of the hyplne, 
breaking down the tissue. Mentions alcoholic precipitate as poisonous to 
healthy tissue. Thinks such fungi not truly parasitic, but dependent upon 
chemical agents for their disease causing power. Refers to H. M. Ward’s lily 
disease in Ann. Bot., May, 1889. 
154. Kellerman, W. A. Prevention of smut in cereals. Agricultural Science, Vol. 
IV, No. 4, April, 1890, pp. 99-101. Lafayette, Ind., gives account of Jensen 
hot-water method of prevention with modification found necessary for barley, 
consisting in soaking the seed eight hours in cold water before plunging into 
hot water. 
155. -. Prevention of stinking smut in wheat. Industrialist, Manhattan, Kails., 
October 4, 1890, Vol. XVI, No. 3, p. 9. Reproduction of description of Jen¬ 
sen liot-water method to prevent smut contained in Bull. 12, Bot. Depart¬ 
ment, Ivans., Ag. Coll. Exp. Sta., August, 1890 (see No. 157). 
156. - and Swingle, W. T. Report on the loose smuts of cereals. Report of 
Botauical Department. Extract from Annual Rep. Ivans. State Ag. Exp. Sta., 
Manhattan, Ivans., 1890, pp. 213-288, Plates I to IX. Gives most thor¬ 
ough treatment of the whole subject, including synonomy of loose smuts; 
splitting up the hitherto well-known Ustilago segetum, (Bull.) Ditrn. or Ustil- 
