l8 9 x -] Botanical Section A. A. A, C. and E. S. 265 



culturists. On motion of Mr. Tracy the following resolution 

 was adopted. 



Resolved, that the botanical section call the attention of the various beads 

 of the entomological, horticultural, and agricultural sections to the d sirabilit\ 

 of a collective exhibit of fungicides, insecticides, and apparatus in a single alcove. 



ALWOOD, Virginia, made some remarks upon a recent se- 

 vere attack of a fungus disease upon apple leaves in certain 

 orchards in Virginia. Many trees lost 50-75 per cent, of their 

 leaves, and the growth was greatly interfered with, the old 

 orchard at the college being nearly defoliated. He exhibited 

 specimens of the diseased leaves. It has increased in severity 

 during three years. The life history of the fungus has not 

 been studied, but the speaker claimed to have checked the 

 progress of the disease by the use of a weak preparation of the 

 Bordeaux mixture. 

 1 Brewer, Connecticut, exhibited some English walnuts 



1 grown by a friend from seed planted several years ago, also 

 a butternut said to be borne on one of the trees coming from 

 the same seed. As no positive proof could be shown the 

 speaker thought it more likely that the butternut tree ap- 



V 



peared there accidentally. 



Gorman, Kentucky, presented (through the chairman) a 

 paper entitled "A bacterial disease of cabbages." A rotting 

 of the cabbage heads was traced to the work of bacteria. In- 

 oculations produced the disease in healthy cabbages. Hot 

 weather and a humid atmosphere are necessary to the pro- 

 gress of the disease. Alwood stated that the same disease 

 occurred in Virginia. Atkinson, Alabama, spoke of a simi- 

 lar disease of turnips at Auburn, in which the interior of the 

 turnips rotted, leaving the outer surface compact. Ilalsted, 

 N. J called attention to the undesirability of planting suc- 

 cessive crops of cabbages and turnips where riasmodiofhora 

 was injurious and suggested that such might be the case with 

 this bacterial disease. 



BRUNK, Maryland, spoke of the successful treatment of 

 Cladosporium fulvum on tomatoes by using carbonate of copper 

 3 oz., carbonate of ammonia I tf>., with 50 gallons of water. 

 This does not spot the fruit while the ammoniacal carbonate 

 of copper does. The merits and demerits of the various spray- 

 ing machines were discussed. 



At the afternoon session Atkinson. Alabama, presented 



notes on some fungus diseases of the cotton plant, and exhib- 



