June, 1920] PATHOLOGY 373 



2543. Anonymous. Onion disease. Kew Bull. Misc. Inf. [London] 1919:-93-94. 1919 — 

 A discussion of the studies by Miss Owi.n of Krlerotium cepivorum Berkeley as a pathogene 

 attacking the bulb of the common onion (Allium cepa). Infection occurs through the roots. 

 Both conidia and BClerotia are funned on bulbs in the soil but the ascigerous stage has not 

 been found. — E. M . Wilcox. 



2544. Anonymous. Black currant rust. Kew Bull. Misc. Inf. [London] 1919: 94. 1919.— 

 An examination of 200 black currant bushes (Ribes nigrum) failed to develop any evidence of 

 the hibernation of the uredinial phase of Cronartivm ribicola. — E. M. Wilcox. 



2545. Anonymous. Potato disease. Kew Bull. Misc. Inf. [London] 1919:94. 1919. — 

 In a further study of the skin spot disease of the potato Miss Owen has shown that the patho- 

 gen is distinct from Spicaria in which genus it had formerly been placed. — E. M. Wilcox. 



2546. Anonymous. Onion diseases. Kew Bull. Misc. Inf. [London] 1919: 92. 1919. — 

 This is a brief statement regarding a Sclerotium disease of the onion (Allium cepa) and shallot 

 (Allium ascalonicum) and onion smut (Urocystis cepulae) in England. This appears to be 

 the first published record of the occurrence of this smut in Great Britain. — E. M. Wilcox. 



2547. Anonymous. Plant cancer. Missouri Bot. Gard. Bull. 7:51-53. PI. 16-18. 

 1919. — Popular treatment of the subject including a table of hosts attacked by Bacterium 

 tumefaciens and descriptions of the tumors on each. — 0. T. Wilson. 



2548. Anonymous. Berichten van den phytopathologischen dienst. [Reports of the 

 phytopathological service.] Tijdschr. Plantenz. 25: 195-200. 1919. — The phytopathological 

 service issues reports on subjects of immediate and practical importance to growers. Four 

 reports have appeared to date. Three of these are here reprinted, viz.: No. 1 on aFusarium 

 disease in spring wheat; No. 3 on the control of smuts in wheat and barley; No. 4 on the 

 stripe disease of barley; No. 2 on the tomato canker is not reprinted since the article of which 

 it is a brief appears in full in this number of Tijdschrift. — H. H. Whetzel. 



2549. Anonymous. Prejudicial effects of treatment with formalin upon the germination 

 of seeds. Sci. Amer. Suppl. 87: 164. 1919. 



2550. Anstead, D. The treatment of fungoid diseases on estates. Agric. Jour. India 

 13: 95-104. 1918. — A lecture delivered at the annual meeting of the United Planters' Asso- 

 ciation of Southern India, 1917. 



2551. Appel, O. Die Pflanzkartoffel. [The potato plant.] Landw. Hefte 36. 89 p., 

 7 fig. Paul Parey: Berlin, 1918— See Bot. Absts. 3, Entry 1348. 



2552. Arnaud, G. TJne maladie de la Rose de Noel (Hellehorus niger). [A disease of 

 Helleborus niger.] Bull. Soc. Path. Veg. France 6: 10-12. 1919.— A smut, Entyloma ranun- 

 culi, not hitherto reported on this host has been found in two localities in France. It attacks 

 the bases of the petioles near the ground. The leaves slowly die and are usually invaded 

 by a secondary organism, Coniothyrium hellebori. Spraying with copper acetate, and sani- 

 tary measures are recommended for control. — C. L. Shear. 



2553. Arthur, J. C: Relation of host and parasite among fungi. [Rev. of : Reed, George 

 M. Physiological specialization of parasitic fungi. Mem. Brooklyn Bot. Gard. 1:348-409. 

 1918. (See Bot. Absts. 1, Entry 1024.)] Bot. Gaz. 67: 180-181, Feb., 1919. 



2554. Ashby, S. F. Leaf roll disease of Irish potatoes. Jour. Jamaica Agric. Soc. 23: 

 44-46. 1919. — A rdsume* of a paper by Wortley (Phytopathology 8: 507-529) is given, since 

 it is thought probable that the disease has occurred on potatoes grown in Jamaica from 

 imported seed. The writer then recommends roguing the fields 6 weeks after planting, the 

 use of healthy seed, and renewal of seed from outside the island at least every second year. 

 — John A. Stevenson. 



