34 
COEN. 
swept into the water, their destruction being thus easily accomplished. 
The great heat generated in a bulk of weevily corn is caused by the 
dust arising from the borings and frass of the insects. The weevils 
themselves are generally to be found inside the granaried heap or 
cargo of corn, unless the weather is very hot; then they are especially 
lively on the outside.”* 
Other kinds of beetles, and various other kinds of corn-destroying 
insects, are to be found in screenings, refuse grain, neglected granaries, 
and the like places, of many of which the life-histories are fully 
known, and to some of which accounts the very significant remark is 
added by one of our best German writers on injurious insects, 
“ Spread in course of traffic.” 
So far as dry corn or meal-feeding kinds are concerned, the mischief 
is probably limited to the evil caused by their spread in the purchaser’s 
own stores or immediate neighbourhood. But with the kinds of which 
the maggot-state (that is, the feeding and destroying condition) is 
passed in the living corn crops, it is quite another affair. If bits of 
straw (such as I have before me in screenings), or knots of webbed 
corn containing chrysalids, or refuse containing infection in any other 
form, are thrown about in our farmyards, or stored where the evil may 
take wing and fly thence to our fields, an amount of trouble may arise 
well worth consideration beforehand. 
Tulip-root ”; Eelworms. AnguillulidcB (? species). 
The disease known as “ Tulip-root ” in Oats has either increased 
very much in amount during the past season, or has been very much 
more observed than in previous years. 
* See p. 43 of paper quoted above. 
