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details noted with reference to the individual bees, sets 

 forth the general results. I give these figures and facts 

 in the hope that readers will apply themselves to the 

 consideration of the question of what course, in their 

 opinion, should be followed in each case with a view to 

 the subsequent successful management of the stocks 

 concerned. 



Notes. — No. 1. Treatment Experiment, breeding 

 noticeably marked. 



No. 2. Mostly advanced stages of infestation, the 

 proportion of dead mites not high, practically all the 

 bees incapacitated, breeding in active progress. 



No. 3. Stock under experimental treatment, bronzing 

 of tubes marked in a few cases, many dead mites. 



No. 4. Nearly all the mites dead, tracheae clean ex- 

 cept in one case of slight bronzing. 



No. 5. Infection here consisted of a single adult 

 female mite and one ovum. A stock which has given 

 negative results every month since previous September. 



No. 6. A stock which has been untreated since 

 November, bronzing of tube commenced, a few dead 

 mites foimd. 



