THE HOP PLANT-LOUSE. * 43 



suffer most: he had them last year and previous years, but never seefl 

 them as early as this. 



June 23. — At Mr. Harter\s yard find no liee ; 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 WaterviUe 

 Times. I 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; no lice 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 other-. 



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 fall in his storerooms, 

 but they disappear soou 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 w 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 

 todo with it: say they have >vcn liee without honey dew. and honey 

 dew in abundance where there were no lice. 



p. in. — Went to Deansville and saw .Mr. Jenks. Mr. Jenks is a 

 microscopist and has paid some attention to liee; says he has Been 

 winged liee, males, early in spring. /. *. about May 20; siw at that 

 time also wingless forms, females. Finds both on the stein of the 

 vines, not far from the roots and crawling upward : later finds them on 

 the lower leaves and then they disappear for a mouth or more. The\ 

 are beginning to reappear aow. Has never found them on the roots in 

 the winter and never looked for them : never saw them in grubbing 

 time. 



