556 
SUBJECT INDEX 
Page 
Lake Okoboji, Second Record of Oscillations in Level of, and of 
Temperature and Meteorology of, John L. Tilton 33 
Lithium Chloride, Electromotive Force and Free Energy of Dilu- 
tion of, in Aqueous and Alcoholic Solutions, J. N, Pearce, and 
F. S. Mortimer 507 
Loess and the Antiquity of Man, B. Sitimek 93 
Loggerhead Turtle, Development of Musk Glands in, Frank A. 
Stromsten 311 
Male, Influence of, on Litter Sizes, E. N. (Wentworth ..305 
Mammals of Sac County, Annotated List of, J. A. Spurrell 273 
Mound Groups in and near Proposed Government Park at Mc- 
Gregor, Ellison Orr 1 43 
Naphthotetrazine, Synthesis of, from Diethyl Succinylosuccinate 
and Dicyanalamide, Arthur W. Dox 533 
Natural Waters of Central New York, Nicholas Knight and Vernon 
C. Shippee 485 
Oaks, Germination and Juvenile Forms of, L. H. Pammel and C. M. 
King 367 
Ocheyedan Mound, Osceola County, George F. Kay 101 
Odonata of Iowa, Lloyd Wells . . . . 327 
Okanogan Valley, Washington, High Level Terraces of, Charles 
Keyes 47 
Orchard Soil Management, Influence of, on Fruit Bud Development, 
R. S. Kirby 447 
Picea from the Glacial Drift,. Wilbur A. Thomas 455 
Pioneer Plants on a New Levee, III, Frank E. A. Thone 457 
Plant Studies in Lyon County, D. H. Boot 393 
Plates, Similar, Non-Farallel, Plane, Electrical Capacity of, L. E. 
Dodd 217 
Pleistocene Deposits Between Manilla in Crawford County and Coon 
Rapids in Carroll County, George F. Kay 99 
Poison Oak, Mites Affecting, H. E. Ewing 323 
Post-Kansan Erosion, M. M. Leighton 83 
Potassium, Separation and Gravimetric Estimation of, S. B. 
Kuzirian • 547 
Prairie du Chien-St. Peter Unconformity in Iowa, Arthur C. 
Trowbridge 177 
Pre-Cambrian Stratigraphy, Continental Perspective of, Charles 
Keyes 53 
President’s Address, George W. Stewart 29 
Protozoa, Observations on, Clementina S. Spencer 335 
Rat, Common, Further Notes on Venous Connections of Lymphatic 
System in, Ttiesle T. Job. . 319 
Red Clover, Additional Notes on Pollination of, L. H. Pammel and 
L. A. Kenoyer 357 
Resonance in an Alternating Current Circuit, Interesting Case of, 
H. L. Dodge .189 
Rheostat design, certain feature of, H. L. Dodge 183 
