288 On Wheat. 
SSS 
chaff, being injured by this pernicious insect, more 
than other wheat. Hoping some abler hand may make 
farther discoveries, on this pernicious insect. It appears 
all sorts of wheat are exactly alike, but the bearded 
dont recoyer as other wheats do. Rye is proof against it. 
Your most humble servant, 
Z. HoLtincsworTH.* 
To the Philad. Agric. Society. 
* Conceiving then, as I now do, that the malady in the 
wheat was occasioned by insects; soon after Mr. Hollings- 
worth’s information to the society. (See our first volume 
124, 5.) I wrote to him, suggesting some experiments for the 
destruction of these very pernicious vermin, of which we 
have no complete entomological description. I proposed 
that, on a small scale, every endeavour should be made to 
find out the means of their destruction. But I see not that 
any thing has been attempted; and therefore conclude that 
my suggestions were deemed unimportant. 
1. The best remedy would be to discontinue, by general 
consent of a neighbourhood infested with the worm, or in- 
sect, the culture, of wheat. It may be an indication of na- 
ture, that a change of crops is indispensable. And they may 
as well do willingly, that to which necessity will compel. 
2. I proposed fall, or winter, ploughing; and frequent win- 
ter harrowing ; to expose the worm, or larve of the insect, 
to the severity of frosts. 
3. To lime lands infested; and to spread salt (Marine) 
plaister of Paris, or any other substance known to destroy 
insects or worms. 
4, To try experiments on the living worm, or insect, be 
it a moth, beetle, fly, or in whatsoever shape the enemy may, 
