320 A NATURALIST IN THE GREAT LAKES REGION 



Glacial drift, 63, 64, 68; thickness of, 63 



Glacial bowlder, 60 



Glacial periods, 57 



Glacial period, origin of, 56 



Glacial striae, 60, 61 



Glacier, 9, 19, 20, 56; thickness of, 62 



Glencoe, 4,11 



Glenwood stage of Lake Chicago, 79, 81 



Golden old man, Zizia aurea 



Gopher, see IMammals 



Granite, yj, 76 



Grape, wild, see Vines 



Grass: 



— Blue-eyed, Sisyrinchium angustifolium 



— Blue joint, Calamagrostis canadensis 



— Cottony, Eriophorum gracilc 



— Dropseed, Sporoholus cryptandrus 



— Fowl meadow, Glycera mrvata 



■ — Goose, Potentilla Anserina 



— Marram, Ammophila arcnaria 



— Of Parnassus, Parnassia carol iniana 



— Prairie : 



A ndropogon furcatiis 



Poa triflora 

 — Rye, Elymos canadensis 

 — Sand reed, Calamovilfa longifolia 

 — Thin, Agrostis perennans 

 — Switch, Panicum virgatum 

 — Whitlow, Draha caroliniana 

 — Yellow-eyed, Xyris caroliniana 



Grasshopper, see Orthoptera 



Green dragon, Arisaema dracontiiim 



Gypsum, yi 



Hardness of minerals, 70 



Hematite, 72 



Helico psyche, caddis fly, 287, 188 



Hemiptera, Bugs: 



— Arctocorixa interrupta, water boat- 

 man, 187, 188, 239 

 — Belostoma, lesser waterbug, 186, 188 

 ■ — Bcnacus griseus, giant waterbug, 104, 



186, 188, 239 



— Cicada linei, cicada. 212, 221, 222, 224 

 — Gerris remigis, water skater, 187 

 — Gelastocoris oculatus, toadbug, 269, 



271 

 — Hydrometria, marsh strider, 187 

 — Notonecta undulala, back swimmer, 



187, 188 



— Ranatra americana, water scorpion, 

 104, 187, 239 



Hepatica, Hepatica triloba 



Hexagenia, ]\Iay-fly, 289 



Honewort, Cryptotaenia canadensis 



Hornwort, CeratophyUiim demersum 



Hound's tongue, Cyanoglossum officiniale 



Hudson River Valley, 18 



Hyacinth, water, Cammasia escidenta 



Hydrophyte, g^ 



Hydro psyche, caddis fly, 286, 288 



H3'lodes association. 150 



Hymenoptera, Ants, Bees, Wasps: 



— Ammophila proccra, digger wasp, 160 



— Bcmbex spinolae, digger wasp, no, 

 "0, 154 



— Camptonotus pennsyhanicus, car- 

 penter ant, 219, 227 



— Formoso subpolitavar neogagatcs, ant, 

 252 



— Las ins niger americanus, black ant, 

 158 



— Microbembex monodonta, digger wasp, 

 153, 154 



Ice, II 



Igneous rocks, 25 



lUinoian glacial period, 57, 62, 63 



Illinois River, 8, 54 



lowan glacial period, 57, 63 



Iris, Iris versicolor 



Ischnura verticalis ponds, 179 



lyry, poison, Rhus toxicode)idron 



Jack-in-the-pulpit, Arisaema triphyllum 

 June beetle, 95 



Karnes, 6y 



Kansan Glacial Period, 57 



Kaolin, 77 



Katydid, see Orthoptera 



Lady's-slipper, \-ellow, Cypripedium 

 parviflorum 



Lake Chicago, 62, 78, 80, 81, 85 



Lake Michigan, 58, 59 



Lakeside, 10 



Lampsilis luteolus ponds, 179 



Lava, 18, 19 



Lead plant, Amorpha canesccns 



