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TULIP-BOOT. 
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go into the manure. Such manure, found to be of straw-litter from 
wormlet-sick fields, ought not to he carried to fields which may still he free 
from disease. We can thus at least ward off new infection from the 
fields. It is only on very heavy land that such manure may be applied 
without consideration, because here the wormlets cannot cause im¬ 
portant injury on account of the physical nature of the soil being 
unfavourable to their spread.”-'-!. K. 
(This matter of transportation in manure is very important, and, 
though I cannot here give at length Dr. Kuhn’s various very practical 
cautions, the above examples warn us as to possibility of bringing in 
infection in Clover and other crops besides Oats, and likewise some in 
weeds. The Corn Bluebottle is named as a very fertile source of 
infection, and wild grasses as open to suspicion.) Dr. Kuhn concludes 
his valuable pamphlet with this summary :— 
“ Deep cultivation, rich manure, but with care not to use wormlet- 
infested stable-manure, and suitable rotation of crop, are the best 
methods for combating this evil; their application consistently carried 
out will be certain to succeed in time.” 
(The above information is taken from Dr. Jul. Kuhn’s Monograph 
on ‘ The Worm-sickness of Eye,’ and mainly from the two last pages.)* 
The above extracts show the extraordinary length of time to which 
the Eelworms can live ; the ease with which they may be carried in 
infested earth ; the certainty with which they may be carried in manure 
made with infested straw, or into which infested plants, whether crops 
or weeds, have entered; the importance of rotation of crops, and also 
(as it appears some kinds of crops have not been known to be infested) 
the importance of saving all present trouble by putting an Eelworm- 
proof crop into infested land; the serviceableness of deep ploughing 
and digging so as to turn the pests down to a depth from which they 
cannot come up again ; the serviceableness also of good measures of 
cultivation to push on growth, and of good firm land in which the 
wormlets cannot travel; and, lastly, we learn that in seeking the cause 
of presence of the disease we may have to go back several years for 
the reason of the original infestation. 
Through the kind assistance afforded me I shall hope to be able to 
add further information as to the exact species of Eelworm now doing 
us so much injury. 
* The name in full of Dr. Kuhn’s work is ‘ Ueber die Wurmkrankheit des 
Eoggens, und iiber die ueberunstimmung der Anguillulen des Koggens, niit denen 
der Weberkarde,’ von Dr. Jul. Kuhn. Halle, 1869. 
