INDEX 



Important. — The page references to plants and animals are given, usually, opposite their 

 scientific names, under such groups as mammals, fish, flowering plants, shrul^s, etc. To aid those 

 not familiar with the scientific names, the common names are given, .alphabetically arranged, with 

 the equivalent scientific names. Thus to find the page reference to "Bcdstraw" look for the common 

 name and note the scientific name. Then turn to "Flowering plants," under which it will be found 

 with page references. 



Acadian period, 46, 47 



Adaptations: to aquatic life, loi; to 

 light, loi 



Adder's tongue, Erythroniimi anieri- 

 camim 



Aftonian glacial period, 57 



Alumroot, Hcuchcra amcricana 



Amphibians, Frogs, Salamanders, 

 Toads : 



— Bufo lentiginosus, toad, 102, 152, 255 

 — Chorophilns nigritus, spring peeper, 94 

 — Dicmictylus viridcscens, the eft, 188, 



— Hyla: 



pickeringii, 165, 166, 219 

 versicolor. 165, 166, 219 



— Plcthcdoti cincrciis, red-backed sala- 

 mander, 219 



— Rana: 



catesbeiana, bullfrog, 240 

 clamata, green frog, 240 

 pdustris, pickerel frog, 240, 241 

 sylvatica, 219, 220 

 virescens, leopard frog, 240 



Amphibole, 72 



Amygdaloid, 73 



Anacharis, see Flowering plants 



Anemone, Anemonella thallictroides 



Angelica, see Flowering plants 



Animal census, 150 



Ant, carpenter, 165 



Anticline, 18 



Ant-lion: association, 150, 159, 163; 

 Myrmelion, 160 



Aphids, 165 



Aquatic insects, adaptations of, 104 



Aquatic leaf form, 102, 103 



Arachnida, Spiders, Mites: 



— Argiopc, the orb weaver, 188, 190 

 — Dendryphantes octavus, 158 

 — Dolomedes sexpunctatus, diving spi- 

 der, 104 



— Epeira gigas, 220, 223, 225 



— Ilydrachna, red water mite, 94 



— Limnocharcs aqiiaticus, water mite, 



— Lycosa wrightii, burrowing spider, 99, 



— Neocosoma arabesca, 220, 223, 225 



— Pardosa lapidicina, 260, 261 



— Pliidippus audax, 223, 225 



— Philodromus alaskcnsis, 158 



— Tetragnalha laboriosa, long-bodied 



spider, 270, 271 

 ■ — Theridiufn spirale, 159 

 — Trochosa cinerea, sand-colored spider, 



152,153 

 — Xysticus formosus, 158 



Arcella, 290 



Archaeozoic, 30, 31, 41 



Arrowhead, Sagittaria lalijolia 



Ash-elm association, 241 



Aster blossom, spider of, 108 



Aster, rush. Aster junceiis 



Atmosphere, beginnings, 26 



Back swimmer, see Hcmiptcra 

 Baneberry, Actaea 

 Bare-bottomed ponds, 1 79 

 Basalt, 19, 75, 76 

 Bat, brown, see ISIammals 

 Beach association, 115, 119 

 Bearberry, Arctostapkylos Uva-ursi 

 Bee, carpenter, 219 

 Beetles, sec Coleoptera 

 Beggar-ticks, Bidens frondosa 

 Bedstraw, Galium apariuc 



Bellflower, marsh. Campanula apari- 



noidcs 

 Bellwort, Uvularia grandijlora 

 Bender, see Crustaccac 

 Bergamot, Monarda jislulosa 

 Betelgeuse, 21 



311 



