THE HOP PLANT-LOUSE. — 48 
suffer most; he had them last year and previous years, but never sees 
them as early as this. 
June 23.—At Mr. Harter’s yard find no lice; it is a hill yard, cleanly 
cultivated, flourishing, and remarkably free from insects of all kinds. 
July 14, 15, 16.—Examined vines for aphids, none found any where. 
July 17.—Went to Mohawk; saw Mr. Steele and examined his yard ; 
no aphids; says his yard, being on a hillside, well drained, always a 
current of air through it, suffers very little from insects, and while he 
has each year some lice, he does not suffer any appreciable damage. 
Hot, dry weather favors hops and is bad for lice, the reverse is bad for 
hops, good for lice. 
July 19.—Arrived at Waterville with Mr. Cutter, of the Waterville 
Times. 1 visited the Hannover farm; found the first aphids I had 
seen, very few indeed, small in size, wingless; a single one to a leaf 
only. Visited Mr. Risley’s yard; nolice here. Visited Mr. Coggeshall’s 
yard; lice more plentiful here than anywhere else so far, and yet not 
numerous; they had evidently been here for some days, because there 
were large specimens, and on the same leaf a varying number of small 
and very small specimens, aS many as seven or eight on a leaf, evi- 
dently the progeny of the old one: Not many leaves are affected, how- 
ever, mainly the lower, large leaves, and very dense vines are more 
affected than the others. 
July 20.—Visited the Hop Extract works, and spent most of the day 
in the yards there; the low, wet yard has a fair sprinkling of medium 
sized and very small wingless lice. The hill yard is as yet clear. Mr. 
Lawrence says a few sultry days will suffice to cover the vines. He 
finds winged ones in immense numbers in late fallin his storerooms, 
but they disappear soon after, and he never saw them in winter. 
July 21,a. m.— With Mr. Eastman, of the Hannover farm, visited hop 
yards toward Sangerfield and vicinity; lice everywhere now, but in 
small numbers; always more abundant on low ground. Saw “honey 
dew” for the first time. The current belief is that this is produced by 
the lice, but there certainly are not lice enough now to produce all this 
“honey dew.” Mr. Eastman and Mr. Fees think the lice have nothing 
to do with it; say they have seen lice without honey dew, and honey 
dew in abundance where there were no lice. 
p. m.—Went to Deansville and saw Mr. Jenks. Mr. Jenks is a 
microscopist and has paid some attention to lice; says he has seen 
winged lice, males, early in spring, 7. e. about May 20; saw at that 
time also wingless forms, females. Finds both on the stem of the 
vines, not far from the roots and crawling upward ; later finds them on 
the lower leaves and then they disappear for a month or more. They 
are beginning to reappear now. Has never found them on the roots in 
the winter and never looked for them; never saw them in grubbing 
time. 
