WHEAT-BULB MAGGOT. 
85 
sown owing to the drought. It received about four tons of lime per 
acre, and a large pond that had gone dry was cleaned out, and the 
mud spread upon this plot. 
The third plot was prepared for Turnips in the same way as the 
second, and received the lime, but, instead of the pond mud, was 
manured with farmyard manure. Considerable damage was done on 
this plot, but not half so much as on the second plot. 
Mr. Parlour’s note of attack on one of his own fields shows such a 
marked difference in amount on portions differently treated that I give 
his note verbatim, with the accompanying sketch plan of the field:— 
“The field was fallow last year, sown with Wheat on Oct. 20th 
and 21st. All the field was manured with town manure except the 
corner marked 1 ; this was covered with mud from a pond that had 
gone dry. It has suffered much more from the attack than any other 
part of the field; it is clearly defined to a yard where the 'pond mud has 
been put. The plot marked 2 has scarcely suffered at all; three years 
ago it was sown in Tares when the rest was fallow, and in consequence 
there was a large quantity of couch grass on it at the beginning of 
last summer, but of course it is all killed now. All the rest of the 
field except the headlands is thinned by the attack.” “ It rather 
appears as though the finer and looser the soil at the time of sowing, 
the more severe the attack, as shown by the Bean-stubble escaping, and 
also that part of our field which was rough and full of sods owing to 
the dead couch grass. It also appears that the pond mud has either 
attracted the Flies, or it has not contained sufficient manurial 
properties to push on the plant out of the way of attack.” Mr. Parlour 
further noted, “ I have examined several fields in the district, and find 
that almost all fallow fields have suffered more or less." “ In no case, 
so far as I can find out, has any Wheat been attacked where the land 
was cropped last summer.” 
On July 2nd Mr. Parlour forwarded me specimens of Flies hatched 
from the chrysalids of the maggots that attacked the Wheat as above 
mentioned, with the observation that he had “many more chrysalids 
and they were hatching every day.” *A.nd a few days later—that is, 
on July 9th—he sent a further supply of the Flies hatched from the 
