19 
sanding will bring the necessary conditions for healthy plants, and the 
old plants may outgrow the trouble with the aid, in the meantime, of 
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 
Vaccinii , 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. 
TREATMENT OF APPLE SCAB. 
By E. S. Goff. 
Recent experiments indicate that apple scab (Fusicladium dendriticum , 
Eckl.) may be almost entirely prevented by the application of certain 
liquid preparations, in the form of a spray, that, while harmless to the 
foliage and fruit of the tree, are destructive to the fungus which causes 
the disease. Various substances have been found to be more or less 
beneficial, but at the present state of our knowledge, a solution of 
copper carbonate in ammonia largely diluted with water is to be most 
strongly recommended. Experiments conducted, the past season, in 
the orchard of Mr. A. L. Hatch, of Ithaca, Wis., with this preparation 
proved so far satisfactory that Mr. Hatch has decided to apply the 
treatment to his entire orchard of about 25 acres the coming season, as 
a means of increasing the income from his apple trees. 
DIRECTIONS FOR PREPARING AND APPLYING THIS FUNGICIDE. 
The copper carbonate and the ammonia may be procured through 
almost any retail druggist. As the former is not always kept in stock 
it would be well to order it some days before it is desired for use. The 
