34 
healthy as any trees in the garden. A few of the 
vermin indeed still appeared, which had been con- 
cealed about the spurs, but where the trees were 
clean there were none to be seen.” 
Train, or fresh oil, is very generally applied 
for their destruction. 
Sir G. S. Mackenzie, Bart., in his com- 
munications to the Caledonian Horticultural So- 
ciety, respecting the utility of oil, writes thus : “ The 
Apple Aphis (Aphis Lanegera) been entirely 
extirpated from one garden by means of oil applied 
to every part were it appeared, and I doubt not of 
its being soon destroyed in every district of the 
kingdom which it has reached, if the same means 
be used.” 
Mr. Forsyth calls it a Coccus, and recom- 
mends for its destruction soap suds and urine, in 
equal quantities, rubbed on the infested parts with 
a painter’s brush. 
Mr. Alexander Hay, to the Caledonian 
Horticultural Society, recommends for the de- 
struction of the Blue Insect, (meaning Aphis Lane- 
gera,) to apply the following mixtm’e to the stems, 
branches, and walls, with a brush : “ Soft soap, 
sulphur, and tobacco juice, a pound of each, in 
about a Scotch quart of soft water,” and recom- 
mends the summer months for the above and fol- 
lowing operations ; he removes the earth from the 
I’oots of the trees, and pours the mixture about 
the roots j viz. “ about forty Scotch pints of soap 
suds, collected from the washing-house, the juice 
