INDEX 
375 
Ganoids, Certain, Cranial Nerves of, H. W. Norris 191 
Gases Excited by Radio Frequency Currents, Phenomena in, E. O. 
Hulburt 147 
Geodes, Rockford, S. E. Galpin. 128 
Germination Studies of Some Shrubs and Trees, E. H. Pammel and 
C. M. King 257 
Gilman, J. C., Effect of Hardness of Water on the Fungicidal Value of 
Mercuric Chloride Solutions 347 
Glass-sponges, New Paleozoic, from Iowa, A. O. Thomas 85 
Goodwin, J. C., and Fenton, F. A., Morphological Studies on the In- 
jury to Apple caused by Ceresa bubalis 229 
Grinnell, See Ferns. 
Gymnosperms (“Evergreens”) of Iowa, A Manual of, Henry S. Con- 
ard 328 
H 
Hall Effect and Specific Resistance in Evaporated Films of Silver, 
Copper and Iron, J. C. Steinberg 153 
Harrison, B. M., Effect of Stretch on Muscle Responses in the Earth- 
worm 173 
Hart, Hornell, Sociology as a Science 230 
Hartzell, Albert, Observations on the Habits of a Tarantula in Cap- 
tivity 187 
Hendrixson, W. S., and Verbeck, E. M., Electrometric Titration of 
Sulfurious Acid with Permanganate 361 
Hendrixson, W. S., and Verbeck, E. M., The Electrometric Standard- 
izing of Titanous Solutions 365 
Hewlett, C. W., A New Kind of Telephone Receiver and Transmitter 151 
Hewlett, C. W., The Scattering of Homogeneous X-rays of Wave 
Eength 0.712 A 0 Unit by Carbon, Rithium and Hydrogen 151 
Horizontal Movement in Oblique Faulting of Inclined Strata, Charles 
Keyes : . 104 
Hudson, Elizabeth, See Martin, Werkenthin and Hudson. 
Hulburt, E. O., The Path of a Rigid Electron Which Moves in a Mag- 
netic Field of Constant Strength Rotating with Constant Angular 
Velocity , 147 
Hulburt, E. O., Phenomena in Gases Excited by Radio Frequency Cur- 
rents 147 
Hulburt, E. O., The Broadening of the Balmer Rines of 'Hydrogen with 
Pressure . 148 
Hydrogen, Broadening of Balmer Rines of, with Pressure, E. O. 
Hulburt ; 148 
Hydrogen, See X-rays. ^ 
Indian Pottery from Mills County, Decorative Markings on some Frag- 
ments of, Paul R. Rowe 53 
Infection, Nodal, See Corn. 
Iron Films, See Hall Effect. 
J 
Jaques, H. E., Brood A of the May Beetles Extends its Range in Iowa 163 
