414 Agricultural Experiment Station, Ithaca, N. Y. 



The second mixture contained bichloride of copper and air- 

 slaked lime.* Soap was added to this mixture for the reasons 

 given above, and the preparation behaved in a manner very similar 

 to that of the Bordeaux mixture. 



As already stated, the first application was made November 17th ; 

 this was followed by a second on the 21th. The plants were cov- 

 ered as well as possible, the entire bench receiving treatment. No 

 check plants were left, as the extermination of the disease, so far as 

 possible, was attempted. The effects of the treatment, however, left 

 nothing to be desired. Not only was the spread of the disease 

 stopped, but affected plants put out new growths which remained 

 healthy. At the time of making the applications, all parts affected 

 with the rust were removed when possible, and this also tended to 

 check the trouble. Still, when one considers the enormous number 

 of spores produced by the fungus, and that these may infest healthy 

 tissues at any time when the proper conditions of heat and moisture 

 are pi-esent, this sudden check to the spread of the disease is very 

 encouraging, and makes the successful control of carnation rust by 

 the use of fungicides very probable. If, in addition to such treat- 

 ment, care is exercised in selecting only healthy plants for propa- 

 gating purposes, and all affected parts are removed as soon as dis- 

 covered, little danger need be feared from this disease. 



L. H. BAILEY. 

 E. G LODEMAN. 



* Copper bichloride 2 ounces, air-slaked lime 2 ounces, soap 10 ounces, water 

 12 gallons. 



