Index to Volumes IV, V and VI. 
Planarian, 254 
Plant Notes, 20 
Tissues, Imbedding, 344 
Plants, Classification of, 298, 386, 
513 
Free-floating, 420 
Hibernacula of Water. 291 
Injurious, 16, 32, 69 
Key to Woody, 277, 364 
Mat, 265 
Maximum Height of, 23 
New and Noteworthy Ohio, 
492 
New and Rare Ohio, 475 
Nutating, 214 
Nutation of, 30 
Poisonous, 16, 32, 69 
Rare Ohio, 61 
Self-pruning, 450 
Species of, for Ohio, 492 
With Compound Leaves, 
340 
With Glands, 103, 399 
With Nodding Tips, 267 
With Tendrils, 305 
Platymetopius cbscurus, 274 
Polydon spatula, 24 
Poplars, Key to, 271 
Porkelesia setigera, 373 
Protophyta, 388 
Protozoa, Brush Lake, 394 
Gr^^wth in, 327 
Pseudoscorpion from Guatemala, 
489 
Pseudcsccrpionidae, 407 
Psilopa fulivpennis, 64 
Pteridophyta, 388, 390 
Pteridophyte, 255, 483 
Pteridophvtes, Ecological Notes on 
295 
Putcrius allegheniensis, 253 
Reducing Division in Ascaris, 519 
Reduction Division, 331 
Remarks on Mollusca, 449 
Report on Mcsquitoes, 438 
Rusts, Experiment with, 57 
Salix amygdaloides, 14 
babylonica, 13 
fragilis, 13 
interior wheeled . 11 
nigra, 14, 15 
pentandra, 12 
sericea, 14 
Sanguinaria canadensis, 379 
Sassafras, Jacket Layer in, 192 
Scalops aquaticus machrinus, 21.3 
Self-pruning, 450 
Seridentus denticulatus, 203 
Sex Organs in Aelosoma, 435 
Sexual and Nonsexual Genera- 
tions, 473 
Shale Bluffs, Flora of, 499 
Shrubs, Winter Buds of, 505 
Silvius, 229 
Skull, vertebrate, 52 
Snowiellus attratus, 230 
Sparrow, English, 518 
Staphylea trifoliata, 320 
Stobaera minuta, 376 
pallida, 375 
Struggle for Life on a Sandbar, 302 
Stylopidae, 443 
Sumacs, Key to, 293 
Sunflower, A New, 214 
Survey, Natural History, 471 
Tabanidae, 217 
Tabanus, 231 
flavidus, 236 
laticeps, 239 
laticornis, 239 
csburni, 241 
productus, 242 
vivax. Life History of, 1 
Trees, List of Ohio, 457 
Winter Buds of, 505 
Tendrils, Ohio Plants With, 305 
Terminology of Organs, 541 
Thamnotettix furculatus, 275 
Thysanura, Key to, 545 
Tinobregmus vittatus, 9 
Topography of Clifton Gorge, 75 
Shore Line, 61 
Trembles in Stock, cause, 463, 477 
Twigs of Hackberrv, 215 
Unionidae, 309 
L'redineous Culture Experiments, 
Index 78 
Velia brunnea, 204 
Vertebrate Skull, 52 
Viburnums, 551. 
Walnuts, Key to Ohio, 307 
Willows, Interesting Ohio, 11 
Summer Flowering, 15 
Wright, Professor A. A., In 
Memcriam, 357 
INDEX TO AUTHORS. 
Berger, E. W., 407, 453, 489, 552. 
Burgess, A. F., 49, 438. 
Buexo, J. R., de la Torre, 287. 
Claassen, Edo, 58, 157, 312, 503, 530. 
Clevenger, Joseph F., 272. 
Coberly, E. D., 47, 98, 114. 
