ABSTRACTS. 



977 



to their culture, the hardiness of the various species, their hybridisa- 

 tion, &(i.—E. T. C. 



Viburnums. By W. J. B. {Gard. Chron. No. 775, p. 320, fig. 100, 

 and a supplemental plate ; November 2, 1901). — Thirty species belonging 

 to this genus are said to be in cultivation at Kew, but many have no 

 special value for private gardens. Notes on nine of what the author con- 

 siders the "best as ornamental shrubs" are given. — G, S. S. 



Viburnums. By G, Gordon {Gard. Mag. 2,505,' p. 707 ; 2/11/1901). 

 An account of the cultivated species of Guelder Rose, deciduous and 

 evergreen. Illustrations are given of V. tovientusum ])licatum, V. Tirms 

 hirtum, and V. Opidus. — W. G. 



Vine Disease, A. By F. Noack (Gari^myZora, p. 619, 1/12/1901). 

 An account of a disease observed in a vinery at Darmstadt last summer. 

 Pale spots are noticed on the berries when half-ripe. Later the spots turn 

 brown and leathery, and on cutting open the grape the flesh is seen to be 

 dead and dry at these points. The spots occur on the sides of the fruit 

 away from the light, and where the berries touch each other. 



On both sides of the leaves, but chiefly on the lower surface, are very 

 minute wart-like intumescences, which at first are green but afterwards 

 become brown, and then somewhat resemble the sori of a rust fungus. 

 These protuberances arise from the abnormal growth of some of the cells 

 beneath the epidermis of the leaf. 



The disease was caused by a high temperature and insufificient tran- 

 spiration. Syringing increased the trouble. — /. P. 



Vine, Diseases of {Bev. Hort. p. 397; 9/1901).— Sheets of 

 chromographic pictures illustrating effects of numerous diseases, facili- 

 tating diagnosis and cure by remedies given in the margin. Published 

 by M. Gabriel Perdoux, Bergerac (Dordogne), fes. 3, 26 ' x 20"— C. T. D. 



Wahlenberg-ia depressa. By A. H. Wolley Dod (Joum. Bot. 468, 



p. 400 ; 12/1901). — Description of new species, allied to TP^. moniana, from 

 Lion's Head, Cape Peninsula. — G. S. B. 



Walnuts. By W. J. B. {Gard. Chron. No. 776, p. 334 ; Novem- 

 ber 9, 1901). — Notes are given of five species belonging to the genus 

 Juglans which are worth cultivating as ornamental trees. — G. S. S. 



Water Melons and Musk Melons in South Dakota. By N. E. 



Hansen {U.S.A. Exp. Stn. S. Dakota Bull. 67, April 1900 ; with cuts). 

 Consisting chiefly of elaborate tables of numerous American and 

 foreign varieties, showing size, surface, shape, and colour, with remarks. 

 Of Water Melons 100 American and 59 imported varieties, and of Musk 

 Melons 153 American and 90 imported varieties, were planted, and are 

 reported upon. — M. C. C. 



Weed Killer, Electrical. Anon. {Agr. Jour. Cape G. H. vol. xix. 

 No. 5, p. 339).—" The Illinois Central Railroad has been testing a new 



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