13 



might be efficacious. In view of the fact that the cranberry has small 

 smooth thick leaves it is possible that the mixtures employed for the 

 grape could be used with greater strength upon the former. However, a 

 beginning can be made with the ammoniacal copper carbonate solution, 

 directions for the preparation of which will be found elsewhere in this 

 Journal. The amount of this solution to be applied per acre can not be 

 stated because it will vary with the rankness of the vines. Apply for 

 the first time as soon as the spring flooding is past, and again just before 

 the blossoms unfold. The third application should be in midsummer 

 followed by two others at intervals of two weeks. This makes five spray 

 ings in all. The instruments to be used will depend much upon circum 

 stances. If the owner applies Paris green or London purple for the in 

 sect enemies of the cranberry, namely, the tip worm, vine worm, etc. 

 then the remedy for the scald can be applied with the same pump. 



There is much Xo be done in improving the sanitary conditions, if 

 that term may be used, of the bogs. It is important to have perfect 

 control of the water supply, and during the growing season, while keep- 

 ing the bog moist enough for the plants, have the ditches deep and 

 free flowing that stagnant water can be kept from the roots of the 

 plants. Doubtless much depends upon having the soil of the bog in 

 the best condition for the healthy growl h of the plants. Where the 

 peat is sonr and soaked with standing water the best conditions obtain 

 for the scald. It may be that proper drainage, water control, and 

 sanding will bring the necessary conditions for healthy plants, and the 

 old plants may outgrow the trouble with the aid, in the meantime, oif 

 the remedy proposed. The best thing to do will be to try and see, upon 

 a small area, provided the practical pecuniary test of possible profit 

 prompts the owner. Some bogs are so poorly adapted for this peculiar 

 industry that it will not pay to spend money upon them, others, never- 

 theless, merit much more attention than they receive. 



THE GALL-FUNGUS. 



This appears to be confined to a single bog in New Jersey, but in that 

 one it is disastrous. Several closely related shore plants as azalea, 

 sheep laurel, lambkill, white alder, leather leaf, huckleberry, and tea 

 berry or winter green, are attacked by the same fungus {Synchytrium 

 Vaocinii, Thomas). The disease is spread by the water in the spring 

 floods and does not pass readily through the air. There is some danger, 

 however, of the pest spreading to other bogs and therefore if this bog 

 was destroyed by fire, together with the infested shore plants there might 

 be hope for a speedy end to the trouble. The matter is so local that it 

 does not merit further treatment here. 



The two diseases of the cranberry herein briefly treated are consid- 

 ered at length, with several engravings, in Bulletin 64 of the New Jersey 

 Experiment Station. 



Rutgers College, New Brunswick, N. J. 



