BEE DISEASES 119 



may be traced to this disease. However, 

 it is a trouble that requires expert knowl- 

 edge to diagnose. Some work has been 

 done along the line of developing a med- 

 ical treatment by the use of drugs in this 

 disease, but the results so far are not con- 

 clusive enough to warrant any definite 

 statements as to what may be expected 

 along this line. 



Dysentery is a disease of the late win- 

 ter months caused by the fact that the bees 

 have been closely confined to the hive and 

 retain in the intestinal tract the accumu- 

 lated fecal matter of several months. 

 During prolonged cold weather this may 

 result in the death of many individuals 

 of the colony. Ordinarily the trouble 

 corrects itself if the bees have a few hours' 

 flying during some warm day. At such 

 times the hive and the surroundings may 

 be liberally marked with brown. During 

 open winters when the bees are able to fly 

 every few weeks the trouble seldom ap- 

 pears. Doctor L. Bahr, of Copenhagen, 



