38 Proceedings of the Royal Physical Society. 



In the spring of 1915 he reported that several stocks had shown marked 

 signs of dysentery, but there were no crawlers. T disinfected his hives after 

 the attacks of dysentery. 



In the spring of 1915 the swarm of bees already mentioned, which had 

 settled in the roof of the cottage in 1913, showed marked symptoms of 

 the disease. T, with the help of neighbours, promptly removed the bees, 

 disinfected the place, and blocked up the entrance. 



In June 1915, T's stocks were strong and working well. 

 In August 1915, one stock showed very slight signs ; there were very few 

 crawlers, and it is understood that T meant to destroy it. 



U.—Vs apiary is situated about half a mile due east from T. 

 In 1914, he owned seven hives and five ruskies. 



In October 1914, there were no signs of Isle of Wight disease; but 

 robbing was going on very vigorously. On this account some stocks were 

 probably weak. 



During the following winter, 1914-1915, five stocks died out, and all showed 

 signs of dysentery in the early spring. 



In June the remaining stocks were fairly strong, and all combs were badly 

 marked with dysentery. When visited the weather was dull and no crawlers 

 were seen. 



The following day was bright at intervals, and a few crawlers were then 

 observed. These were found to have the colon very much dilated and 

 clogged. 



In August 1915 only one stock remained, viz. the one which had 

 appeared the weakest in June. It showed slight but distinct traces of 

 the trouble, and U decided to destroy the bees and clean up and disinfect 

 his hives. He did so in order to prevent the disease spreading among 

 his neighbours. 



No other cases in the immediate neighbourhood have been reported, 

 although there are several apiaries near by. 



V. — V's apiary is situated about five miles north-east of T. It consisted 

 of ten hives and twenty-five ruskies. 



In August 1915 all seemed very strong and well cared for, but examina- 

 tion showed the ground covered with bees unable to fly, with distended 

 abdomens, dislocated wings, and all the usual appearances of Isle of Wight 

 disease. I could not locate any special stocks as being the affected ones, for 

 the bees were distributed all over the grass, and not in front of any particular 

 hives. Samples of bees were sent to Aberdeen University investigators as 

 usual, who reported that the appearances were those associated with the 

 disease. The bees sent did not contain Nosema. 



