In Bulletin No. 115 it was recommended to hold this flowage 

 until the 20th of April each year, the idea being to let this flowage 

 protect the buds from early frosts and at the same time destroy the 

 wintering fruit worms to some degree. It seems preferable however, 

 to let the water off earlier and allow the vines to harden as much as 

 possible before the later frosts come in May and the first part of 

 June. 



C. On bogs which are dry or have very scanty winter flowage : 

 No practicable remedy has thus far been discovered for the fruit 



worm on bogs of this kind, and we can only suggest that further 

 experiments with arsenical poisons be made. In our experience, a 

 combined Bordeaux mixture and arsenate of lead spray (the latter 

 being used at the rate of five or six pounds to 50 gallons of water), with 

 about five pounds of resin fish oil soap (per 50 gallons of water) 

 added as an adhesive, hasgiven the best results. This spray, however, 

 often shows a strong tendency to cling to the fruit at picking time 

 and is therefore objectionable. The fact that it is necessary to spray 

 two or three times each season in order to get anything like satisfac- 

 tory results against the fruit worms also makes this method of treat- 

 ment objectionable because so much spraying necessitates no small 

 amount of injury to the vines and the fruit. Where ants's nests 

 are present they should not be disturbed as some of the common 

 species of ants found on dry bogs destroy not only fruit worms but 

 also certain other injurious insects, notably the Yellow-headed Cran- 

 berry Worm. 



D. For all bogs : 



1. Bury the'''' screen itigs,^^ to destroy any 7vorms ^vhich may be in 

 them. 



2. Clean out all cracks and crevices where worms may have spun up 

 in the screefi house- — if this is near the bog — to guard against possible 

 infestation from this source. 



More experiments with fall flowage may show that either a more 

 prolonged reflow immediately after picking or an earlier putting on 

 of the winter flowage will be entirely efficient and satisfactory as 

 treatments for this insect when the water supply is sufficient. It is 

 also possible that good results might be obtained on many bogs by 

 increasing the number of catchwaters in the main ditch and running 

 small dikes (boards laid down edgewise and end to end would per- 



