346 CONNECTICUT EXPERIMENT STATION REPORT, IQI2. 
last season, it seems quite probable that it has caused more or 
less harm to this host before, since it has been reported as quite 
injurious in several other Eastern states in times past. The 
trouble was called to our attention last year by a request, late 
in September, from H. B. Cornwall of Meriden to visit his 
farm and see what was the matter with his cabbages. Inspection 
showed that the trouble, which was quite serious, was this bac- 
terial disease. Although Mr. Cornwall had grown cabbage for 
some years, this was the first time that he had noticed trouble 
of this sort. “ 
From what we could learn from Mr. Cornwall, the disease 
apparently started in his cabbage from the seed of Danish Bald 
Head, which was imported. This variety was by far the most 
infected, and in looking over the old seedbed, we found several 
stunted. seedlings of this variety that showed the disease. Mr. 
Cornwall also gave some of the young plants to several of his 
neighbors, and an examination of their fields showed the dis- 
ease on this variety, but not usually on the others. 
Mr. Cornwall did not notice the trouble until about the mid- 
dle of September, when, following a spell of muggy weather, 
this variety began to go down rapidly. Several other varieties, 
such as Copenhagen Market, Flat Dutch, and Savoy, showed: 
little or none of the disease, although close to the Danish Bald 
Head. This probably means that the disease was not present in 
their seedlings, and that it spread to them later from the infected 
Danish Bald Head when the latter became badly infected. But 
of course it might also mean that these varieties were not so 
susceptible to the disease. The cabbage was on new land, and 
the plants were all from new seed beds. Part of the land had 
manure on it, and part had not, but this did not seem to make 
any difference. The Danish Bald Head first set out showed the 
trotble worse than those planted later. 
This disease is recognized by the blackened veins of the leaves, 
Plate XXb, where the bacteria develop chiefly, and in time 
extend down into the head. The leaf tissues finally turn yellow, 
and the leaves are easily pulled off. Soft rot, caused in part 
by other organisms, often loosens them at the base, and develops 
an ill-smelling internal decay, XXa. The bacteria gain entrance 
asa drops of water at the water pores on the margins of the 
eaves. 
