AUTHEACNOSE OF THE BEAN. 849 



cearam, D. C. It shows on the upper side of the leaves 

 as small white patches, composed of a mass of fine 

 threads and spores. This gives it a flour-like appear- 

 ance, whence the common name. It also attacks the 

 stems and even the fruits. The portions attacked soon 

 turn brown, and, if the spots are numerous, the plant is 

 soon killed. As a preventive, the temperature and 

 moisture in the house should be carefully regulated, but 

 as the disease lives upon the outside of the plants, it, 

 like all powdery mildews, readily yields to treatment. 

 Spraying with sulphide of potassium, or cupram, or evap- 

 orating sulphur in the house, will destroy it. If the 

 disease has appeared in a house, during the summer 

 everything should be cleaned out of the house, and a 

 pound of sulphur should be burned for each 3,000 cubic 

 feet. Care will be required, as this will be fatal to 

 animals and plants, as, well as to the spores of the fungus. 



ANTHEACNOSE OF THE BEAK. 



When grown under glass, the bean is very subject 

 to the attack of this fungus, which appears on the stems 

 and leaves, as well as on the pods, causing spots to form 

 that quickly enlarge, until they cover a considerable 

 area. Upon the stems and pods the tissues dry up and 

 appear sunken. To succeed with this crop, the seed 

 used must be free from disease. Although soaking the 

 seed in copper sulphate solution may aid in destroying 

 the spores, it is not entirely effectual. As soon as the 

 first spot shows, the affected portions should be removed 

 and burned, and the plants sprayed with Bordeaux mix- 

 ture. After the pods form, some of the solutions should 

 be used. We have had good results when using copper 

 sulphate solution, 1 to 2,000, but others report failures 

 with it. 



DAMPIITG OFF. 



Considerable losses often occur in the cutting bed 

 and seed boxes from what is commonljr known as "damp 



