70 



stocks had died of Isle of Wight disease. This new stock and hive is 

 named G14. 



No further cases of Isle of Wight disease have arisen in the Nicolson 

 Apiary, although, as the records below show, Nosema could be obtained from 

 bees there at almost any time. 



Outbreaks of Isle of Wight Disease in Lewis. 



Date of 



Introduction 



of Stock 



29/9/10 

 from Sussex 



21/5/12 

 from Exeter 



31/5/12 

 from S. Eng. 



4/6/13 

 from Exeter 



Autumn 1909 

 from Duiriuish 



Autumn 1913 

 from Wales 



11/7/14 

 from Exeter 



Date of 

 Outbreak 



31/1/11 

 6/10/11 

 6/10/11 

 20/1/12 

 28/5/12 



10/9/12 



18/6/13 



28/7/13 



Early Spring 

 1914 



12/7/14 



How 

 terminated 



Destroyed 



2/3/11 

 Recovered 



Destroyed 



12/10/11 



Allowed to die 



out 29/2/12 



Remainder sent 



to G-S., 



Cambridge 



Died out 



12/10/12 



Died out 



before Winter 



Died out 

 Winter 1913-14 



Recovery inl914 

 Relapse in 1915 



Blacks died out 

 in Autumn ; 

 remnant of 

 Yellows sur- 

 vived Winter 



If 



Site, etc., 



disinfected 



Yes 



Yes 



Yes 



No 



Yes 



No 



No 



No 



of 



fount, 

 on fine 

 die out. _ 



"■he number of stocks in the apiary varied from 4 to 14 during this period. 

 Seventh .a ^ — spores present. o — spores absent. y.s. — young stages. 



English bees h^ 



(Duirinish) in the?' "/ Characteristics of Isle of Wight Disease as seen in 



1911, and 1912, prov -^^'t'^* Outbreaks. 



1913 it swarmed on 25 .g^ ^gyond the Island. 



after it was hived, and w.^yg outbreak of two cases 5^ miles apart of stocks intro- 



August. On this date a t., game source (Sussex), 4 months previously. A9 and 



stock. On 6th September, ^ 



