Table of Contents
Academy Business
| Officers, Committes, Minutes, Winter Meeting | |
| 3-28 |
Memorials
| Clarence Abiathar Waldo | |
| Stanley Coulter | 29-32 |
| Robert Wesley McBride | |
| W. S. Blatchley | 33-36 |
| Charles Marquis Smith | |
| W. H. Bair | 37-38 |
Papers--General
| President's Address—The Unselfish Service of Science | |
| W. M. Blanchard | 39-52 |
| The Status of Science Education | |
| James F. Mackell | 53-58 |
| Teaching Conservation in Indiana | |
| Sidney R. Esten | 59-62 |
Papers on Geology, Geography, and Archaeology
| Notes on the So-called "Synthetic Aqua Marine" | |
| Frank B. Wade | 63-64 |
| Some Features of the Cincinnati Arch as shown by Geological Conditions in an Indiana Gas Field | |
| William N. Logan | 65-70 |
| The Silurian Coral Reefs of Northern Indiana and their Associated Strata | |
| E. R. Cumings, R. R. Shrock | 71-86 |
| Notes on the Present Status of Waterway Development in the United States | |
| J. E. Switzer | 87-92 |
| Indiana's Ability to Support Liberally Higher Education Analyzed and Compared with that of Michigan, Wisconsin, Minnesota, Iowa, Illinois and Ohio | |
| Stephen S. Visher | 93-102 |
| Bell Creek—Fall Creek Valley | |
| Annice Carter, Louise Painter | 103-106 |
| Porter's Cave and Recent Drainage Adjustments in its Vicinity | |
| Arch R. Addington | 107-116 |
| Notes on Areal Geology of Miami County, Indiana | |
| W. E. Tharp | 117-118 |
| Fossils from the Mancos-Dakota-Tununk Formation in the Vicinity of Steamboat, Arizona | |
| Albert B. Reagan | 119-128 |
| Proper Motion of Weisse XXIII 175 | |
| W. A. Cogshall | 129-130 |
Papers on Chemistry, Physics, and Mathematics
| A New Type of Sound Amplifying Horn | |
| Arthur L. Foley | 131-133 |
| The Effect of a Dissolving Salt on the Pitch of a Vessel Partially Filled with Water | |
| Arthur L. Foley | 134 |
| Measurement of Condenser and Coil Resistance by the Differential Thermometer Method | |
| R. R. Ramsey | 135-138 |
| A Straight Line Frequency Audio Oscillator | |
| R. R. Ramsey | 139-144 |
| Calibration of Ammeters at Radio Frequencies | |
| Herbert Hazel | 145-162 |
| Bibliography of Literature Bearing on the Light-Sensitiveness of Selenium | |
| R. Earl Martin | 163-182 |
| Notes on Qualitative Analysis | |
| Ralph W. Hufferd | 183 |
| An Indestructible Steam-Bath | |
| Ralph W. Hufferd | 184 |
| Toxicity of Colloidal Arsenic to Plants | |
| R. H. Carr | 185-188 |
| An Improved Test for Acetone in Urine | |
| R. E. Lyons, J. T. Brundage | 189-194 |
| A Study of the Available Methods for the Determination of Selenium in Organic Compounds | |
| W. E. Bradt, R. E. Lyons | 195-202 |
| A Qualitative Study of the Catalytic Hydrogenation of the Oxides of Carbon | |
| V. N. Morris, L. H. Reyerson | 203-206 |
| Some Theoretical Discussions of Hypnotics | |
| Thomas C. Jaleski | 207-208 |
| Mathematics and the Other Sciences | |
| Will E. Edington | 209-212 |
Papers on Botany and Bacteriology
| Enumeration of the Vascular Flora of Jasper County, Indiana | |
| Winona H. Welch | 213-220 |
| Vaucheria aversa | |
| F. M. Andrews | 221-222 |
| A List of Algae of Monroe County, Indiana-II | |
| F. M. Andrews | 223-224 |
| Reversion in Trillium | |
| F. M. Andrews | 225-226 |
| Lycopodium complanatum | |
| F. M. Andrews | 227-228 |
| On the Continued Growth of Certain Fern Prothallia | |
| David M. Mottier | 229 |
| On the Occurrence of an Endophytic Fungus in the Prothallia of Osmunda Claytoniana L | |
| David M. Mottier | 229-230 |
| Indiana Plant Diseases, 1925 | |
| Max M. Gardner | 231-248 |
| The Seeding Habits of White Snakeroot, Eupatorium urticaefolium Reichard | |
| Albert A. Hansen | 249 |
| Recent Indiana Weeds, 1926 | |
| Albert A. Hansen | 250-252 |
| A Botrytis Disease of Ribes odorata Wendl. | |
| J. M. Van Hook | 253-256 |
| Amorphophalus titanum | |
| T. G. Yuncker | 257-258 |
| Additions to a Bibliography of the Genus Cuscuta | |
| T. G. Yuncker | 259-262 |
| Survey of the Vegetation in the Vicinity of Cement Mills | |
| C. L. Porter | 263-268 |
| Airplane Photography and Ecological Mapping | |
| Stanley A. Cain | 269-272 |
| Photomicrography as an Aid to Teaching and Research in Biology | |
| Edwin J. Kohl | 273-278 |
| A Fungus Growing in "Mineral Oil" | |
| Robert Hessler | 279-280 |
Papers on Zoology and Entomology
| Symptoms as Indicators | |
| Robert Hessler | 281-286 |
| Records of Indiana Dragonflies—II | |
| B. Elwood Montgomery | 287-292 |
| Insects of Indiana for 1926 | |
| J. J. Davis | 293-308 |
| Some Habits of Limax maximus L. (?) | |
| Clem O. Thompson | 309-310 |
| Raising Fleas for Laboratory Purposes | |
| S. A. Rifenburgh | 311-312 |
| Agglutinin Production: Frequency of Injections Constant, Dosage and Total Amount Injected Varied | |
| Charles A. Behrens | 313-316 |
| Formation of the Intranuclear Rod in Succinea | |
| C. P. Hickman | 317-318 |
| Two Years Bird-Banding at West Lafayette, Indiana | |
| Louis Agassiz Test | 319-322 |
| Notes on Some Birds of Anderson, Indiana | |
| Charles Piper Smith | 323-326 |
| Some Results of A Bird Census | |
| Will Scott | 327-330 |
| Gynandromorphic Earwigs | |
| W. P. Morgan | 331 |
| A Note on the Mode of Distribution of Earwigs | |
| W. P. Morgan | 332-334 |
| Hog Lung-Worms: Correction of Previous Papers | |
| George Zebrowski | 335-336 |
| Notes on Amphibians and Reptiles | |
| George S. Myers | 337-340 |
| Some Sources of Ornithological Material and What They Tell | |
| Amos W. Butler | 341-344 |
Back Matter
| Members, Index | |
| 345-364 |