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CAULIFLOWER DISEASE. 
133 
towards the end of May, 1889. Then it appeared to me that as 
the plants sent were masses of infested malformed growth, the best 
suggestion I could give was to destroy them as rapidly and as 
thoroughly as could be done, so as (if possible) to stamp out the 
Eelworm presence. 
The only clue that, so far as I see, we have at present, towards 
checking this special form of attack, lies in the circumstance of scarcely 
any of it (perhaps one plant in fifty) being observed on the spots 
where, respectively, a manure heap and also Potato clamps, occupying 
about half an acre, had been. These spots were dressed with the 
same peat-moss, &c., manure, and in the same proportion as the rest 
of the field; so this shuts the door on the probability of the infestation 
being brought in the manure, which suggested itself. But it certainly 
points to difference in state of surface soil affecting amount of attack. 
Whether the plants throve and did better on these spots, and so 
resisted attack better, or whether the Eelworms which might be 
present were buried and killed, is at present unknown ; but still we 
may get some practical help towards prevention from the above 
observation. 
With the coming season it will be possible to try, with the first 
plant growth, whether the applications of sulphate of ammonia, sul¬ 
phate of potash, &c., mentioned at p. 20, which have been found 
serviceable in other cases of Eelworm attack to other kinds of plants, 
may not be serviceable in this case also. 
