CONTRIBTITIONS FROM THE WISLEY LABORATORY. 



871 



]Mny 2,S. — Letter received from Magnus published in Gardeners* 

 Chronicle. Magnus states that he has^ never seen the warty 

 disease of potato, and consequently cannot have identified 

 the organism as Urophlyctis leproides (Trabut), P. Magnus. 

 (39.) 



Oct. 13. — Crops in allotment gardens in Nottinghamshire destroyed. 

 (20.) 



Nov. 30. — Diseased tubers received by Careuthers from Lanca- 

 shire. (15.) 



Dec. 19. — Descriptive artiicle in Gardeners' Chronicle by N[ew- 

 stead] . (59.) 



Description of the disease by Macdougall. (37.) 

 1904. — Description of the disease hy J. W. Eastham (Holmes Chapel). 



1907. — Mas SEE again describes the fungus as identical with 



Oedomyces leproides. (54.) 

 Aug. — Outbreak in Scotland reported by A. W. Borthwick. (12.) 

 Dec. 7. — Description of the disease and history of the organism by 



E. S. Salmon. (71.) 



1908. — June 18. — An Order issued making the disease notifiable under 



the Destructive Insects and Pests Act of 1907. 

 Aug. 8. — First leaflet issued by the Harper Adams Agricultural 



College. (41.) 

 Oct. 1. — " Black Scab in Potatos " Order (Ireland). 

 Dec. 17. — Description of germination of the spores by Massee, 



who refers the parasite to the genus Synchytrium. (56.) 



1909. — July 31. — Description of germination of the spores by 



Percival. (62.) 



Oct. — Disease recorded in Newfoundland. PI. T. Gtissow states 

 that he has been informed by Professor Trabut that the 

 disease in beetroot in Algiers is due to a totally different 

 organism from that in potato. (24.) 



1910. — Jan. — Paper by Percival describing the life history and 



cytology of the organism — now called Synchytrium endohto- 

 ticum. (63.) 



1910. — Statement by Massee that he had written to Schilberszky, 



who had replied informing Him that the organism was not 

 his species and was unknown to him. Organism renamed 

 Synchytrium solani. (57.) 

 Nov. — Bulletin issued by the Harper Adams Agricultural College. 



Maps published showing distribution of warty disease in 

 Great Britain and in Shropshire and Staffordshire. (45.) 



1911. — Eeport of Intelligence Division of Board of Agriculture issued 

 showing distribution of potato tumour in Great Britain, 

 and detailing results of experiments. (6.) 



Feb. 21. — Letter sent to Schilberszky from the Eoyal College of 



Science, London. 

 Feb. 27. — Eevised regulations relating to importation of plants into 



B B 2 



