As IAG de 
We ue” 
ae 
SINCE the foregoing collection has been in the 
press, I have been informed, but do not vouch for the 
fact, that plaister has a considerable effect in preventing 
the fly from injuring wheat. Whether, like a success- 
ful medicine, when much in vogue, the gyps is ima- 
gined to bea panacea, and good for every thing; or 
whether there be really foundation for this information, 
I cannot determine: but it is well worth inquiry. We 
know that some things are offensive to vermin, and 
drive them away; and others destroy them. One or 
the other of these results (if it be of any use at all in 
this particular) may flow from strewing plaister on win- 
ter grain. 
have thoughts of trying the following experiments, 
on ) my wheat fields; as the fly is among us. But I 
have not fixed on the time;—whether it shall be in the 
season when the old fly deposits its eggs, i. e. soon 
after the wheat is sown in the autumn; or in the 
spring, so as to destroy, or drive off, the young brood, as 
they are produced from the eggs. Perhaps it will be 
right to try the experiments in both seasons. 
None of these to be so powerfulas to injure the grain. 
1. Brine two lands with salt and water, or sow com- 
mon salt thereon. 
2. On two other lands, plaister of Paris. 
3. On two other lands, soot, and a small proportion 
of sulphur. | 
4. On two others, lime just slacked. 
