ZOOLOGY AXD BOTANY, MICROSCOPY, ETC. 243 



Pink Disease of Citrus. — H. Athertox Lee and Harry S. Yates' 

 {PhUippine Journ. Sci., 1919, 14, 657-73, 7 pis., 2 figs.). This disease 

 is caused by the fungus, Corticium salmonicolor Berk., which attacks the 

 stem and branches of citrus trees. It has been well known as a disease 

 of Hevea, and has been reported on Citrus^ but not hitherto considered as 

 a cause of serious trouble. The writers describe its appearance on the 

 trees and their methods of treating it ; they also give recommendations 

 for the prevention of further spread. A. L. S. 



Disease of Tomato and other Plants caused by a New Species of 

 Phytophthora. — G. H. Pethybridge and H. A. Lafferty {ScL Proc. 

 Roy. DuWn Soc, 1919, 15, 487-505, 3 pis.). The root systems and 

 lower portion of the stems are attacked by the fungus. It was success- 

 fully isolated and grown in artificial cultures in which the development 

 of sexual organs took place. These conformed to the type of Phytophthora 

 infestans, and the species has been named P. cryptoyea. The fungus 

 was also found causing a similar disease in Petunia, and may probably 

 be the cause of disease in Aster and Cheiranthus. It was found by 

 inoculation experiments to be pathogenic to potato and other plants. 

 It is probable that the oospores of the fungus hibernate in the soil. 

 Methods of control are outlined. A. L. S. 



Botrytis Disease of Galanthus. — K. von Keissler {Zeitschr. 

 Giirimysphys, 1917, 6, 18-27, 2 figs. ; see also Ann. 3Iycol., 1917, 15, 

 160). Botrytis yalanthina has caused considerable damage to cultivated 

 plants of Galanthus. Lately the fungus has been found on wild plants ; 

 both the Botrytis stage and the sclerotium were found. A. L. S. 



Leaf-disease of Tobacco in Roumania. — K. Preissecker (Fachliche 

 Mitteil. Oesterr. Talahr. Wien, 1916, Heft 1-15, 4 pis. ; see also Ann. 

 MycoL, 1917, 15, 161). Whitish or brownish spots on tobacco leaves 

 were found to be caused by Alternaria Brassicee var tabaci. A. L. S. 



Studies with Macrosporium from Tomatoes. — J. Rosenbaum 

 (Phytopathology, 1920, 10, 9-21, 2 pis., 1 fig.). From observation in 

 the field, and from laboratory cultures the author distinguishes two 

 diseases due to Macrosiwrium. "Nail-head" spots on fruit stem and 

 leaves are caused by Macrosporium Tomato Cooke. Immature fruits are 

 attacked in transit ; fully ripe fruits seem to be immune. Another 

 disease of stems and fruit is due to M. Solani E. and M., which grows 

 chiefiy on potato tubers. A. L. S. 



Market Pathology of Vegetables. — K. K. Link and Max W. 

 Gardner [Phytopathology, 1919, 9, 497-520). The rots dealt with in 

 various vegetables and fruits are : (1) Slimy soft rot ; all the bacterial 

 soft rots attack cabbages, etc. (2) Watery soft rot, due to Sderotinia 

 Jibertiana ; it is a prevalent vegetable rot. (3) Rhizopus rot ; especially 

 virulent on sweet potatoes. (4) Grey mould rot ; includes rots due to 

 Botrytis. An enumeration of different market produce is made with 

 the rots to which they are subject. Other rots due to different fungi 

 are also touched on. A. L. S. 



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