14 
who contended strongly, or rather obstinately, that 
the Honey Dew was not produced from the insect, 
but fell from the heavens, the atmosphere, or he 
did not know where ] and even some modern 
writers appear equally ignorant on this matter. 
Millar shows (as we find in a work originally 
written by Bradley), that “ the long conti- 
nuing dry easterly winds affect the young and 
tender leaves, whose perspiring matter becomes 
thickened and glutinous, so as closely to adhere 
to the sm’face of the leaves, and becomes a proper 
nutriment for insects, which are always found 
preying upon the leaves and tender branches of 
fruit trees when this sort of blight appears, though 
it be not the insects, which are the first cause.” 
Forsyth does not consider it to be caused by 
insects, as we find he gives separate descriptions for 
Aphides and Honey Dew, and recommends differ- 
ent remedies for their removal. Weighton in 
his communication to the Caledonian Horticultural 
Society, says “ a few days after the Honey Dew 
comes on, the green and blue fly appears,” and 
farther on in the same paj)er, he observes “ it is 
imagined by some that this glutinous matter is 
perspired by the tree, and that the insects come to 
feed,” and adds “ tliis is my opinion.” Harri- 
son shows that he does not suppose it to be pro- 
duced by insects. If he had entertained a different 
opinion, he would not have had two distinct de- 
scriptions, but have connected the account of the 
Aj)hidcs and Honey Dew together. Washing with 
