DISEASES OF PLANTS. 445 



Leaf disease of coffee was controlled with Bordeaux mixture. 



Leaf diseases of tomatoes have l)een reported, and a fruit disease ascribed to 

 a species of Gloeosporium has been under investigation. 



No definite results have yet been obtained from a study of a disease which 

 causes the dropping of young peaches. 



The transmission of rusts in general and Puccinia malvacearum in particu- 

 lar, S. BucHET {Bid. Soc. Bot. Fnincc, GO {1913), No. 6, pp. 520-52Jf, 558-565).— 

 This is a critical review of results and conclusions of Eriksson (E. S. R., 14, 

 p. 770) and Blaringhem (E. S. R., 31, p. 841) regarding the wintering-over of 

 rusts. 



Smuts and rusts of grain crops, J. E. Howitt and R. E. Stone {Ontario 

 Dept. Agr. Bui. 229 {1915), pp. 24, fiffs. 15). — Popular descriptions are given of 

 smuts and rusts of grain crops, together with suggestions for their control 

 so far as definite means are known. 



On the appearance of spores and mycelium of rust within the grains of 

 cereals, J. Eriksson {Compi. RcnxL Acad. Sci. [Paris], 158 {1914), ^'O. 17, pp. 

 1194-1196). — Referring to an article by Beauverie on the presence of rust 

 spores in seeds of cereals (E. S. R., 30, p. 241), the author calls attention to 

 the fact that he had already reported their occurrence in 1896, but that he con- 

 siders their pre.seuce abnormal and not of practical importance in the propa- 

 gation of the rusts. A similar position is taken regarding Pritchard's report 

 of their occurrence in wheat (E. S. R., 26, p. 143). 



The efficiency of rust spores contained in seed of grain for the propaga- 

 tion of disease, J. Beauverie {Compt. Rend. Acad. Sci. [Paris], 158 {1914), 

 No. 17, pp. 1196-1198).— Rexie-wing his own investigations (E. S. R., 30, p. 241) 

 and citing other data, the author considers that the evidence favors the hy- 

 pothesis that spores within the seed coats of cereals and grasses aid in dissemi- 

 nating rust epidemics. He thinks, however, that if this is not already demon- 

 strated there should be controlled investigations carried out to determine the 

 role of the intraseminal spores on the wintering of cereal rusts. 



Foot rot of cereals, A. Desmoulins {Prog. Agr. et Vit. {Ed. VEst-Centre), 

 35 {1914), Nos. 41, pp. 381-383; 42, pp. 394-599). —Discussing the various fac- 

 tors, conditions, and characters associated with foot rot of cereals, the author 

 states that this trouble is of complex and as yet incompletely determined causa- 

 tion. It is recommended that Iftte varieties be employed, these being planted 

 as late as possible and not very thickly, that close rotation of cereals be 

 avoided, that early or rank growth be checked by grazing, etc., and that an 

 active fertilizer be supplied in early spring. 



Busts and smuts of Indian corn {Agr. News [BarMdos], 14 {1915), No. 

 335, pp. 78, 79). — Discussing briefly rusts and smuts of maize in the West 

 Indies, the author states that Puccinia purpurea has not been met with in this 

 connection, but that P. sorghi {P. maydis) was noted on maize in one locality. 

 Species of Oxalis are not uncommon, members of this genus being subject to 

 attack by the aecidial stage of the fungus in Africa. 



Ustilago maydis has not assumed very serious proportions. Sphacelotheca 

 reiliana has not yet been noted on maize in this region. 



A preliminary investigation on a disease of red clover, P. Baccabini and 

 G. Bargagli-Petrucci (Atti R. Accad. Econ. Agr. Georg. Firenze, 5. ser., 11 

 {1914), ^0. 2, pp. 23-96, pi. 1, figs. 12). — The abnormal appearance and struc- 

 tural peculiarities shown by clover affected by a disorder appearing in the 

 valley of the Elsa are described, and the fungi, bacteria, nematodes, etc., found 

 in this connection are discussed. After outlining some infection and other studies 

 carried out therewith, the authors sum up this preliminary study by stating 

 that while investigation has brought into view a number of injurious factors in 



