August, '22] SCIENTIFIC NOTES 315 



regions, the abandonment of fruit culture and stock raising, by the absolute or 

 relative prohibition of methods judged by the whole world to be indispensable to 

 agriculture, horticulture and stock raising, awaiting the day when modern biological 

 methods will give us the beautiful results which we have a right to hope for, notably 

 by the destruction of plant enemies through the help of beneficial exotic insects and 

 the suppression of piroplasmoses by vaccination." L. O. H. 



American Foul Brood. To transfer bees from infected hive to clean hive by 

 the smoke method. Prepare a clean hive body with full sheets foundation. 

 Place on this hive body a ventilated inner cover which may be made by cutting 

 out about one-third of the solid cover or bee escape board and tacking wire 

 screen over the opening to make it bee-tight. 



When ready to transfer bees from infected brood chamber to clean hive body in 

 new brood chamber, which should be done during a honey flow, go to the infected 

 colony sometime during the middle of the day when bees are working in the fields 

 and remove the queen. Place her in a cage with a little candy and take care of her 

 until ready to return her to the bees in the afternoon. 



About sundown take your clean hive body and go to the infected colony Re- 

 move the inner cover from the infected colony and place the clean hive body with 

 full sheets of foundation and ventilated cover on top of the infected colony. Re- 

 duce the entrance to the infected colony to about % inch x 2 inches or 3 inches. 

 Have your smoker well filled and giving a good dense cool smoke. Smoke the bees 

 gently through the entrance to the old brood chamber, being careful not to use too 

 much smoke or work the smoker hard or fast enough to make the smoke hot — dense 

 cool smoke applied almost continuously gives the best results. The ventilated inner 

 cover on the clean hive body on top of the old brood chamber will allow the smoke 

 to escape and the bees not being able to escape at the entrance will leave the combs 

 in the old brood chamber and attempt (o escape at the top of the clean hive body. 

 By smoking gently for ten or fifteen minutes almost all the bees will desert the old 

 brood chamber and cluster on the frames, top and sides of the clean hive body. 

 You can tell pretty well when all the bees are out of the old brood chamber by looking 

 into the clean hive body through the wire screen cover. When you are quite sure 

 the bees are all out of the old brood chamber close the entrance and set it, with the 

 clean hive body still on top, to one side and place clean bottom board on the old 

 stand. Now gently lift the clean hive body, bees and all, off the old brood chamber 

 and place it on the clean bottom board on the old stand. If any bees are left on top 

 of the frames of the old brood chamber after removing the clean hive body they may 

 be brushed off and placed in front of the new brood chamber. Replace the cover and 

 the old brood chamber, closing it up bee-tight. By this time the bees in the clean 

 hive body, which is now your new brood chamber on the old stand, will have quieted 

 down so that you may give them back their queen which you have in the cage. 

 This should be done by removing the stopper from the cage so the queen can escape 

 and pushing the inner cover over just enough to lay the cage on top the frames. 

 If the bees are still clustered on top the frames so as to make it impossible to move the 

 cover far enough to permit placing the cage on top the frames without allowing 

 bees to escape, push the open cage in under the frames at the entrance, but you 

 should watch the entrance for four or five minutes to see that the queen does not 

 come out as it sometimes happens that the queen not finding any bees on the bottom 

 board and feeling that she is in a strange place runs out at the entrance and gets lost. 



If you have only one infected colony to treat you cannot very well save the healthy 

 brood in the old brood chamber which you left closed up beside the clean hive body 



