85 
iiuthors for the ilestruction of these great vegetable 
enemies. 
Fojrsyth says, “ Frequent watering of the 
wall and standard trees with lime-water, and 
throwing it plentifully on the underside of the 
leaves, where the Acarus is generally found, will, 
in a short time, extirpate that destructive insect.” 
The solution is described in the preceding pages, 
for the destruction of the Aphis on plumbs. 
Harrison gives a Recipe to be applied in 
the autumn, for the destruction of their eggs, as 
follows ; — “ To eight gallons of water add one 
pound of soft soap, two pounds of common sulphur, 
and half an ounce of black-pepper.” 
Abercrombie dii’ects lime-water to be ap- 
plied on standard and wall trees, in the same way 
as Forsyth, and also frequent washing with clear 
water in houses. 
Clear water is almost universally adopted by 
gardeners for their eradication, and recorded by 
several authors, as being effectual for their destruc- 
tion, among which are Speechepy, Weighton, 
Nicoe, Harrison, and many others. 
The instruction given hy Forsyth and 
Abercrombie renders us no useful information. 
Neither would the preparation do if ten times the 
quantity of lime was used. 
Harrison’s communications must be nothine- 
more than supposition, or he w'onld not have 
directed the egg to be destroyed when none, or 
at least but few, were in existence. Certainly if 
