160 Report Of THE BoTANIST OF THE 
because it is a very prominent commercial one and was moré 
susceptible to attacks of the rot fungus than the other. That 
the experiment might be of commercial value, barrel quantities 
of the apples were used for each different treatment. The apples 
were treated on October 17th, 18th and 20th. Solutions of cop- 
per sulphate and of formalin were used. 
TABLE ILV.— EXPERIMENTS IN DIPPING APPLES. 









Date. Barrel. at lg Se a Solution. 
Oct. 17 1 | 5minutes...| 1 lb. copper sulphate to 50 gallons of water. 
17 2 | 10 minutes...| 1 lb. copper sulphate to 50 gallons of water. 
17 3 | 5minutes...| 2 lbs. copper sulphate to 50 gallons of water. 
17 4 | 10 minutes...| 2 lbs. copper sulphate to 50 gallons of water. 
18 5 | 5minutes...| 3lbs. copper sulphate to 50 gallons of water. 
18 6 | 10 minutes...| 3 lbs. copper sulphate to 50 gallons of water. 
20 7 | 30 minutes...| 3 lbs. copper sulphate to 50 gallons of water. 
17 8 | 5minutes...| 41bs. copper sulphate to 50 gallons of water. 
17 9 | 10 minutes...| 41lbs. copper sulphate to 50 gallons of water. 
20 | 10 | 30 minutes...) 41bs. copper sulphate to 50 gallons of water. 
20 11 | 10 minutes...| 5 lbs. copper sulphate to 50 gallons of water. 
20 12 | 30 minutes...| 5 lbs. copper sulphate to 50 gallons of water. 
20 13 | 10 minutes...| 6 lbs. copper sulphate to 50 gallons of water. 
20 14 | 30 minutes...) 6lbs. copper sulphate to 50 gallons of water. 
20 15 | 10 minutes...| 8 lbs. copper sulphate to 50 gallons of water. 
20 16 | 30 minutes...| 8 lbs. copper sulphate to 50 gallons of water. 
20 17 | 5minutes...| 10lbs. copper sulphate to 50 gallons of water. 
20 18 | 10 minutes...| 4 pint formalin to 30 gallons of water. 
20 19 | 30 minutes...| 4 pint formalin to 30 gallons of water. 
18 20 | 5minutes...| 1 pint formalin to 30 gallons of water. 
18 21 | 10 minutes...) 1 pint formalin to 30 gallons of water. 
L? 22 | Check ...... Not treated at all. 
18 201, DOCK) os , Not treated at all. 
20 24 | Check ...... Not treated at all. 
20 25..| (Giteck vu, maa Not treated at all. 

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After the apples were taken out of the solutions and were dried 
off by exposure to the sun and wind, they were barreled and the 
barrels piled on the north side of a building and covered with 
boards as a protection against rain. Before there was danger 
from freezing they were taken into a dry, cool storeroom. 
On December 2d the apples in each barrel were examined, and 
it was very apparent in comparing the treated ones with the 
checks that the solutions of copper sulphate and of formalin had 
materially checked the growth of the Cephalothecium. However, 
a 
