Index to Volumes IV, V and VI. 



Galls, Lateral Bud, 143 



Morphology of Leaf, 1-10 

 Root, 117 ' 

 Stem, 143 



of Acarina, 115, 117 

 Aphididae, 118, 121 

 Arachnida, 129 

 Cecidomvia, 116, 119, 140 

 Cynipida'e, 119, 120, 141 

 Diptera, 130 

 Hemiptera, 130 

 Hymenoptera, 130 

 Lepidoptera, 117 

 Psyllidae, 118 

 Tenthredinidae, 143 

 Gelastocoridae, 287 

 Genera Insectorum, 148 

 Geology and Physiography, 431 



of Clifton Gorge, 75 

 Glands of Plants, 103, 399 

 Gyninosperniae, 390 

 Hackberry, 215 

 Haematopota, 231 

 Helianthus illinoensis, 214 

 Helobiae, 83 

 Helizoan, A New, 261 

 Hemiptera of Ohio, 99, 273 



S. Am., 195 

 Herbarium, State, 59, 249, 264, 



316, 397, 403, 441 

 Heterosporous Pteridophyte, 255 

 Hibernacula of Water Plants, 291 

 Hickories, Key to, 269 

 Homosporous Pteridophyte, 483 

 Hydrofluoric Acid for Marking 



SHdes, 272 

 Hyperiaceae, 403 

 Hypericum, 249 

 Hyphantria cunea, 453 



Isopoda, Ohio List, 488 

 Jacket Layer in Sassafras, 192 

 Kentucky, Lower Ordoyician, 447 

 Key to Alders, 517 



Ashes, 270 



Catalpas, 496 



Dogwoods, 419 



Elms, 315 



Genera of Woody Plants, 

 364 



Hickories, 269 



Hyperiaceae, 404 



Liverworts, 312, 503, 530 



Maples, 297 



Poplars, 271 



Sumacs, 293 



Walnuts, 307 



Woody Plants, 277 

 L;ictuca saligna, 74 



Ladybird, Asiatic, 49 



Lake Laboratory, 177 



Leaf Expansion, 210 



Leayes, Deciduous, 163 



Limestone, Columbus, 67 



List of Ohio Trees, 457 



Liverworts, Correction to Ke)-, 503 



Key to, 312, 503, 530 

 Lycopodium pcrophyllum, 301 

 Lygaeus sulcatus, 200 



Mallophaga, New, 528 



Mammals, Fonner Occurrence, 471 



Mammals, Ohio, Notes on, 550 



Maples, Key to, 297 



Marking Slides, Method for, 272 



Marsilea vestita, 554 



Martynia, 444 



Mat Plants, 265 



Megamelas angulatus, 374 



spartani, 375 

 Milk-sickness, Cause, 463, 477 

 Mole, Prairie, 213 

 Mollusca, 449 



Note on, 462 

 Morphology of Philotria, 304 

 Mosquitoes, 438 

 Mosses, 157 

 Moth Book, 74 

 Mutation, 448 

 Myndis fulyus, 46 

 radicis, 42 

 Myriopod, 161 

 Mytilus, Development of Gill, 51 



Natural History Survey, 471 

 Nectaries of Plants, 103 

 Nelumbo, Embryo of, 167 

 Nematophyta, 388 

 Nerthra stygica, 288 

 Notiphila, 64 

 Nutating Plants, 214 

 Nymphaeaceae, 83 

 Ohio Academy of Science, 23, 47 

 Ordoyician, Mapping Lower, 447 

 Orthezia solidaginus, 94 

 Orthoptera of Ohio, 109 

 Paddle Fish, 24 

 Pamera tuberculata, 201 

 Pangonia, 227 

 Paraffin Method, 344 

 Peas, Disease of Seed, 507 

 PedicuHdae, 107 

 Philotria, Morphology of, 304 

 Phle])sius maculatus, 276 

 Phyllucelis atra, 93 

 Phyllodinus fuscous, 46 



Koebelei, 44 

 Physiography and Geology, 431 

 Pinus laracio, 396 



