10 
IOWA ACADEMY OP SCIENCE Vol. XXIV, 1917 
Page 
Notes on Some Iowa Rodents Dayton Stoner 353 
Botany. 
The Sand-flora of Iowa.. B. Shimek 
Some Additional Notes on the Pollination of Red Clover 
L. H. Pammel and L. A. Kenoyei .-357 
The Germination and Juvenile Forms of Some Oaks 
.L. H. Pammel and Charlotte M. King 367 
Plant Studies in Lyon County, Iowa D. H. Boot 393 
Notes on Melilotus alba Walter E. Rogers 415 
The Cleistogamy of Heteranthera dubia R. B. Wylie 
The Morphology of the Thallus and Cupules of Blasia pusilla 
...Marguerite B. Rohret 429 
The Influence of Soil Management on the Formation and De- 
velopment of Fruit Buds R. S. Kirby 447 
The White Waterlily of Clear Lake, Iowa H. S. Conard 449 
Tree Growth in the Vicinity of Grinnell, Iowa. < .H. S. Conard 
A Picea from the Glacial Drift Wilbur H. Thomas 455 
Pioneer Plants on a New Levee, III Frank E. A. Thone 457 
Chlorotic Corn W. H. Davis 459 
The Aecial Stage of Alsike Clover Rust.. .W. H. Davis 461 
The Use of Ferric and Ferrous Phosphate in Nutrient Solu- 
tions. George E. Corson and Arthur L. Bakke 477 
The Cutinization of Apple Skins in Relation to Their Keeping 
Qualities and their Environment Winifred Perry 483 
Chemistry. 
Some Natural Waters of Central New York 
Nicholas Knight and Vernon C. Shippee 485 
Diffusion Phenomena of Double Salts 
Harold L. Maxwell and Nicholas Knight 489 
Water Works Laboratories Jack J. Hinman, Jr 501 
The Free Energy of Dilution of Lithium Chloride in Aqueous 
and Alcoholic Solutions by the Electromotive Force 
Method F. S. Mortimer and J. N. Pearce 507 
The Electrical Conductivity and Viscosity of Solutions of 
Silver Nitrate in Pyridine. . .H. L. Dunlap and J. N. Pearce 
A Study of the Relation between Solubility, the Heat of Solu- 
tion and the Properties of the Solvent 
H. E. Fowler and J. N. Pearce 523 
The Partial Analysis of Some Iowa Clays (Preliminary Re- 
port) J. N. Pearce 
The Protein Content and Microchemical Tests of the Seeds of 
Some Common Iowa Weeds. .L. H. Pammel and A. W. Dox. .... .527 
Synthesis of a Naphthotetrazine from Diethyl Succinylosuc- 
cinate and Dicyandiamide Arthur W. Dox 533 
The Behavior of Benzidine Toward Selenic and Telluric Acids 
Arthur W. Dox 537 
Amino Acids and Micro-organisms .Arthur W. Dox 5&9 
The Separation and Gravimetric Estimation of Potassium... 
S. B. Kuzirian. . . . . ,547 
The Action of the Amino Group on Amylolitic Enzymes. 
E. W. Rockwood 551 
Some of the Factors that Influence the Extraction of Gold 
from Ores by the Cyanide Process A. W. Hixson 
