No. 1, August, 1921] PATHOLOGY 61 



THE HOST (RESISTANCE; SUSCEPTIBILITY; MORBID ANATOMY AND 



PHYSIOLOGY) 



402. KoTTUR, G. L., AND M. L. Patel. Malformation of the cotton plant leading to ster- 

 ility. Agric. Jour. India 15: G40-C43. PL 43-45. 1920.— IVIalformation of the cotton plants 

 shows itself when 2-3 months old. The leaves are smaller and bunched, at first of an unusual 

 dark green color changing to reddish and pinkish yellow as the malformation advances; 

 the plants die without producing seed. The disease does not occur among American and Egj'p- 

 tian varieties. The Indian cottons, Surtee-Broch, Goghari and Wagod, are most affected. 

 Light rainfall seems to favor the disorder and it is worse on alkali lands and where cotton is 

 grown continuously without rotation. Where light soil is used the affection is less. The 

 disease is Hot hereditary. — /. J. Skinner. 



403. Lees, A. H. Reversion of blackcurrants: A method of identification. Jour. Ministry 

 Agric. Great Britain 27: 1122-1127. 7 fig. 1921. — Leaves on reverted plants produce fewer 

 submain veins and the leaf edges are less serrated. The abnormality begins about the middle 

 of May; the early leaves may be normal. Propagation from normal stock and the rogueing 

 of diseased individuals are recommended as control measures. — C. W. Bennett. 



404. SuNDBERG, Roberto. Causas y sintomas de enfermedades en las plantas. [Causes 

 and symptoms of plant diseases.] Defensa Agric. [Uruguay] 1: 131-133, 160-163. 1920.— 

 A very general account of the relation of heat, light, water, soil, and cultural conditions to 

 health in plants. — John A. Stevenson. 



405. ViNCENs, M. F. Note sur les formations ligneuses anormales dans I'ecorce de 

 I'Hevea brasiliensis. [Note on abnormal woody formations in the bark of Hevea brasiliensis.] 

 Compt. Relid. Acad. Sci. Paris 171 : 871-873. 1920. — Three types of abnormal woody forma- 

 tions are indicated by bark irregularities: (1) The healed wounds from bleeding, (2) small, 

 somewhat pointed projections, of disputed origin, with a hard woody core, often independent 

 of the normal wood or joined to it by a short slender strand, (3) plates made up of branched 

 and interwoven strands of variable diameter (1 mm. to 1 cm.) and considerable extent. Sec- 

 tions show structure similar to secondary wood surrounding some cells which appear dead but 

 on staining with Sudan III were shown to be laticiferous and to communicate with other 

 cells of the same type. The strands are surrounded by generative tissue. Rutgers studj'ing 

 this condition in Java reported that the death of the central cells was caused by Phytoph- 

 thora Faberi. Vincens' observations from Cochin China do not support this view. He fails 

 to find mycelium necessarily associated with the production of these structures but always 

 finds a bacterium and sometimes also a Fusarium, but thinks the latter negligible since no 

 mycelium was observed. Many bacteria live in the latex. — Eloise Gerry. 



DESCRIPTIVE PLANT PATHOLOGY 



406. Anonymous. El carbon volante del trigo. [Loose smut of wheat.] Defensa Agric. 

 [Uruguay] 1: 312-318. 5 fig. 1920.— A description of the disease caused by Ustilago tritici, 

 which has been very prevalent in Uruguay, is given. — John A. Stevenson. 



407. Anonymous. Enfermedades de las plantas producidas por hongos. [Plant diseases 

 produced by fungi.] Defensa Agric. [Uruguay] 1: 79-83. 7 fig. 1920. — A popular account of 

 fungi as to structure, spore production, and spore germination. — John A. Stevenson. 



408. Anonymous. Potato disease (blight [Phytophthora infestans]) in 1920. Jour. Min- 

 istry Agric. Great Britain 27: 1146-1147. 1 fig. 1921. 



409. Anonymous. Sugar cane disease. South African Sugar Jour. 5: 201-203. 1921. — 

 An account of the sugar cane diseases in Natal and Zululand is given. The diseases listed 

 are as follows: A root disease caused by a soil fungus, Himantia stellifera, which has also been 



