INDEX— Continued 



Sugar Beets, 1, 2, 3, 4, 5, 7, 45, 50, 

 53, 55, 57, 63, 75, 82, 85, 86, 

 94,96, 101, 110, 119, 122, 123, 



125, 127, 128 

 Sugar Beet Leaf-hopper. ... 8, 24, 123-126 



Nature of Injury 124, 125 



Methods of Control 125 



Description 126 



Egg 126 



Nymph 126 



Adult 126 



Life History 126 



Sugar Beet Nematode, 3, o, 14, 31, 



38, 59-64, 65 



Nature of Injury 61 



How Spread 61 , 62 



Methods of Control 62, 63 



How to Prevent Spread 62 



How to Check Multiplication . 63 



Description 64 



Egg 64 



Larval Stages 64 



Adult 64 



Brown-cyst Stage 64 



Life History 64 



Sugar Beet Root-louse, 3,6, 12, 38, 



55-59, 111, 113 



Nature of Injury 55 



Methods of Control 55, 57 



Description 57, 58 



Egg 57 



Females 57 



Hibernating Lice 58 



Males 57 



Stem-mother 58 



Winged Lice 57, 58 



Winged Migrants 58 



Life History 57, 58 



Natural Enemies 59 



Sugar Beet Webworm, 7, 18, 67-78, 



135, 137 



Nature of Injury 68-71 



Methods of Control 71-73 



Description 74, 75 



Egg 74, 75 



Worm 75 



Pupa 75 



Cocoon 75 



Moth 75 



Life History 75-77 



Natural Enemies 77, 78 



Why Growers do not Spray 73, 74 



Sugar Beet Wireworm 53 



Sulphate, Nicotine 121 



Sunflower 63 



Swainson's Hawk 109 



Sweet Clover 8, 63, 66, 82 



Sweet Potatoes 65, 66, 86 



Swine 50 



Syrphus-fly 59, 116 



Syrphus-fly enemy of Sugar Beet 



Root-louse 20, 59 



Tachina-flies 77, 85, 87 



Tachina-fly parasite of Alfalfa 



Webworm 20, 85 



Tachina-fly parasite of Sugar Beet 



Webworm 18, 77 



Tall Meadow Oat-grass 63 



Tarnished Plant-bug 6, 122, 123 



Nature of Injury 122 



Methods of Control 122 



Description 122, 123 



Egg 122 



Nymph 122, 123 



Adult 123 



Life History 123 



Natural Enemies 123 



Testing of Sprayers 35 



Thorax of Insects 29 



Thread-waisted Wasp 134, 135 



Three-spotted Flea-beetle 16, 93 



Ticks 29, 106 



Tiger-beetle 26, 76, 131, 132 



Tiger-moth, Virginia 87 



Timothy 5, 63, 65, 66 



Tiphia inornata 52, 134 



Tobacco 114 



Tobacco Decoction 115 



Tobacco Preparations 33 



Tomatoes 63, 65, 66 



Tracheae 29 



Traction Sprayer 33, 34, 47, 73 



Trees 115 



True Army Worm 10, 78-81 



Nature of Injury 79 



Methods of Control 79, 80 



Description 80, 81 



Egg 80 



Worm 80 



Pupa 80 



Moth 80, 81 



Life History 81 



Natural Enemies 81 



True Bugs, 3, 12, 29, 30, 59, 111, 119, 



122, 132, 133 

 A species of True Bug which preys 

 upon Sugar Beet Root-lice .... 59 



Tumble-bug 48 



Turkeys 1 04 



Turnips 63, 86, 88, 99, 101, 121 



Two-lined Hopper 16, 100 



Two-winged Flies 20, 29, 30, 111, 121 



Variegated Cutworm 8, 22, 47, 48 



Nature of Injury 47 



Methods of Control 47 



Description 47, 48 



Egg 47 



Worm 48 



Moth 48 



Life History 48 



Verbesina 86 



Vetch 63, 66 



Virginia Tiger-moth 87 



156 



