the dikes, and for this reason, in many cases, the mere dividing of 

 the bog would be sufficient to provide for the quick reflowage of the 

 various sections without a late holding of the winter flowage on the 

 higher ones. On bogs where it would be necessary to hold this 

 flowage it would be best to alternate the sections on which the 

 water is held late, from year to year, as annual late holding reduces 

 the crop. With a bog so arranged that the infested portion could 

 be quickly reflowed at any time it would be best to plan to reflow 

 once for about fifty hours during the last week in May, and again for 

 about twenty-four hours as late in June before blossoming as possible 

 without running any serious risk of injuring the buds. Perhaps the 

 tenth of June would be about the right average date. 



It should be noted here that dividing large bogs as has just been 

 recommended, would also make it possible to protect them from frost 

 much more effectively and surely. 



It is probable that many bogs could be treated satisfactorily as 

 follows : 



2. Divide that portion of the bog surface which includes the infested 

 portion into areas of nearly equal elevation by means of catc/nuaters in 

 the tnain ditch and low dikes run/ring out on each side from these, as 

 already described for the fruit ivorfn. With the bogs so arranged, wait, 

 in the case of either or both broods of the f re 7vorm, until the tvorms 

 have reached the stage of general pupation ofi the surface of the bog under 

 the vines, then raise the water up among the vines without covering them 

 a?id hold it there for three days. When full grown the worms go from 

 the vines to the ground where they pupate, becoming quiet. Later 

 they escape from these pupse as moths. 



The first period during which the fire worms hatch from the eggs 

 is often quite a long one, young worms sometimes hatching continu- 

 ously for five weeks time. Consequently, the period during which 

 the worms become full grown is also often quite a long one, and 

 may last three or four weeks, during which time one worm after 

 another will leave for the ground to pupate. 



When this is the case, the treatment given above may be repeated {at 

 least with the first brood') at intervals oj a week. The dikes and catch- 

 waters used for this treatment may also be used for fighting the fruit 

 worm and frosts as already pointed out. 



3. If a bog be treated to destroy fire worms as above suggested, 

 the worms will have a chance to do some injury before the water is 



