- 481 - 
larvae on roots may be killed by pouring upon them 40-percent nico- 
tine sulphate (1 to 1,000) (p. 20). 
Sphinx moth ( Pholus achemon Drury) - spray vines with lead 
arsenate plus 40-percent nicotine sulphate (1 pt, to 200 gal.) (p. 24). 
Grape leaf hopper (Ery throneura comes Say) - formula 27, or with 
40 percent nicotine sulphate, 1 lb.; liquid soap, l/3 gal.; water, 200 gal. 
The young and adults may a] so be killed with a 10 percent nicodust, 
or a 6 percent nicosulphur dust (p. 25). 
Butterfly on hollyhock ( Vanessa caryae Hubn.) - 40-percent 
nicotine sulphate (l to 600) to kill caterpillars (p. 26). 
Hop aphid ( Phorodon humuli Schr.) - formula 27 or 5 percent 
nicodust (p. 26). 
Melon aphid ( Aphis gossypii Glover) - 40-percent nicotine 
sulphate (1 to 1,000) or 5 percent nicodust (p. 26). 
Squash bug ( Anasa tristis DeGeer) - 40-percent nicotine sul- 
phate (1 to 600) or a 10 percent nicodust (p. 27). 
Onion thrips (Thrips tabaci Lind.) - 40-percent nicotine 
sulphate (1 to 200) or 5 percent nicodust (p. 29). 
Pea aphid ( Macro si phum pisi Kalt.) - formula 27 a, or a 10 
percent nicodust, or a 6 percent nicosulphur dust (p. 29). 
Black peach aphid (Aphis persicae - niger Smith) - formula 27, 
or a 5 percent nicodust (p. 30). 
Pear thrips (T aeniothrips inconsequens Uzel.) - formula 24, or 
5 or 6 percent nicodust (p. 33). 
Mealy plum louse ( Hya l opt eras a rundini s Fabr. ) - formula 27, 
(p. 35). 
Aphids on potatoes - 5 percent nicodust, or 40-percent nicotine 
sulphate (l to 300) (p. 36). 
Flea beetles and leaf beetles on potatoes - a nicodust lead 
arsenate (p. 36). 
Aphids on rose (Mac rosiphum rosae Linn, and Myz aphis rosarum 
Tfalk.) - 5 percent nicodust or 40-percent nicotine sulphate (l to 
1,000) (p. 37). 
Rose snout beetle (Ehynchites bicolor Fabr. ) - A 10 percent 
nicodust has given good control in some places (p. 37). 
Strawberry aphid (M yzus f ragaefolii Ckll.) - 5 percent nico- 
dust (p. 39). 
Flea beetles on tomatoes - nicodust and lead arsenate (p. 41). 
