Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 28 (1921) > Annual Issue
Volume 28, Annual Issue (1921)
Front Matter
Title Page - Front Matter p. 1-2
Table of Contents p. 11-13
General Interest Articles
In Memoriam: E. W. Stanton p. 27-30
L. H. Pammel
The Address of the President - American Science p. 33-36
Nicholas Knight
Research
A Chemical Study of Dolomites p. 37-45
Nicholas Knight
Three Glacial Tills at Ames, Iowa p. 47-48
John E. Smith
Discovery of Volcanic Ash in Iowa p. 49-53
Charles Keyes
Geological Age of the Terrepleins of Utah's Plateaux p. 54-56
Charles Keyes
Batholithic Veinings of the Sierra de los Cucaras in Baja California p. 57-58
Charles Keyes
Some Pleistocene Exposures in Des Moines p. 59-63
James H. Lees
Some Proboscidian Remains Found in Henry County p. 65-68
H. E. Jaques
A Laboratory Optical Pyrometer: Notes on Its Design and Operation p. 69-82
Wm. Schriever
Measurements of the Amplitude of Vibration of the Diaphragm of the Hewlett Tone Generator p. 83-88
C. E. Lane
Measurements of the Minimum Audible Intensity of Sound for Tones of High Frequency p. 89-92
C. E. Lane
A Single Band Acoustic Wave Filter p. 93-94
G. W. Stewart
The Effect of Drawing on the Crystal Structure of Tungsten Wires p. 95-97
L. P. Sieg
A Note on Kater's Reversible Pendulum p. 98-102
L. P. Sieg
The Coefficient of Simple Rigidity and Young's Modulus for Hexagonal Crystals of Selenium p. 103-111
L. P. Sieg and R. F. Miller
The Absorption of Light Passing through Deep Slits as a Function of the Length and Depth of the Slits and of the Wave Length of the Light p. 112-112
L. P. Sieg and A. T. Fant
The Tactual Analog of Stroboscopy p. 113-114
L. E. Dodd
Hall Effect in Thin Silver Films p. 115-115
J. C. Steinberg
The Alpha Lines in the "K" Series Tungsten Spectrum p. 117-118
Charles Crofutt
The Blackening of a Photographic Plate as a Function of Intensity of Monochromatic Light and Time of Exposure p. 119-119
P. S. Helmick
The Solar Surface during the past Thirteen Years - A Review of Sun-Spot Observations Made at Alta, Iowa from 1908 to 1920 p. 121-126
David E. Hadden
The 1921 Outbreak of the Clover-Leaf Weevil in Iowa p. 127-129
H. E. Jaques
A Baltimore Oriole Census p. 131-134
Katherine Gilmore and H. E. Jaques
Corn Oil Cake Meal for Growing and Fattening Pigs p. 135-146
John M. Evvard and Russell Dunn
Notes on the Mammals Observed in Marshall County, Iowa p. 147-149
Ira N. Gabrielson
Bird Banding and Incidental Studies p. 151-159
Dayton Stoner
Alcohols as Factors Altering Fatigue Processes in Frog Muscle p. 161-177
Francis Marsh Baldwin
Analysis of Certain Smooth Muscle Responses p. 179-195
B. M. Harrison and Francis M. Baldwin
Notes on the Differential Viability in Gambusia p. 197-200
S. W. Geiser
Distribution of the European Elm Scale p. 201-205
Albert Hartzell
The Readjustment of the Peripheral Lung Motor Mechanism after Bilateral Vagotomy p. 207-214
T. L. Patterson
Methods of Teaching Parasitology p. 215-221
Herbert R. Werner
Notes on the Genus Catharinaea in Iowa p. 223-224
Lucy M. Cavanagh
The Use of Common Names for Plants p. 225-229
B. Shimek
The Genus Ceanothus L. in Iowa p. 230-245
B. Shimek
Dr. Rudolph Gmelin and His Collection of Minnesota, Wisconsin and Iowa Plants p. 247-255
R. I. Cratty
Two Additions to Our List of Cruciferae p. 256-261
R. I. Cratty
The Teaching of Plant Pathology p. 263-264
L. H. Pammel
Trees of the Proposed Mississippi Valley National Park p. 265-267
L. H. Pammel
Shrubs of the McGregor District p. 268-271
L. H. Pammel
Studies on the Germination of Some Woody Plants p. 273-282
L. H. Pammel and C. M. King
Studies of the Phycomycetes of Iowa p. 283-291
J. M. Raeder
Concerning the Capacity of Foliage Leaves to Withstand Wounding p. 293-304
Robert B. Wylie
Key to the Families of Flowering Plants of Central Iowa p. 305-316
Henry S. Conard and Winifred Ellsworth
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