FRIT FLY. 
9 
the infestation in the Clover would be perfectly destroyed, and that on 
the surface of the land where the Eelworms which had left the plants 
were (or probably still were) lying would be got rid of, and subsequent 
ploughing and operations in due order, giving, of course, the requisite 
number of weeks for the gas-lime to oxidise aud^fcecome harmless, 
would be treatment apparently suitable to all points of the case. 
To put in Clover after Tulip-rooted Oats, or Oats after “ Clover- 
sickness,” or any crop liable to infestation after one suffering from 
Eelworm, is manifestly undesirable, and, where nothing else can be 
done, a deep ploughing with implements fitted to take off the first 
land-slice separately and bury it well down, is a thoroughly good 
measure. 
It is also to be remembered, as a most important point, that this 
kind of Eelworm can be passed through the cattle feeding on plants 
infested by it without injury; therefore, manure from cattle fed on 
infested Clover is greatly to be mistrusted for application to Clover 
crops or Oats. 
For further notes on the subject of Eelworms, likewise for figure 
of nearly-allied kind of Tylenchus, see paper on “ Tulip-root,” and 
references in Index. 
CORN. 
Frit Fly. Oscinis frit , L. {? Oscinis vastator, Curtis). 
OSCINIS VASTATOR. 
Perfect fly, nat. size and magnified; and attacked plant, with maggot inside.* 
* The Oscinis vastator of Curtis bears such a strong resemblance to the Oscinis 
frit , which is the subject of the present paper,—even if it is not absolutely the same, 
—that I have used Curtis’s figure to give the appearance of the insect and its 
method of injury. J; 
