4 
IOWA ACADEMY OF SCIENCE 
PROGRAM OF THE IOWA ACADEMY OF SCIENCE. 
The President’s address, by Professor Samuel Calvin, on “The Work of the 
Iowa Geological Survey,” and the lecture by Professor William A. Locy on “The 
Service of Zoology to Intellectual Progress,” were given in the Physics Lecture 
room at 7:30 p. m. Friday. Before the beginning of the evening program Pro- 
fessor Seashore gave demonstrations of the “Tonoscope” in his laboratory. 
PROGRAM. 
9. 
10 . 
11 . 
12 . 
13. 
14. 
15. 
16. 
17. 
18. 
19. 
20 . 
21 . 
22 . 
23. 
24. 
25. 
26. 
27. 
28. 
29. 
30. 
In Physics Lecture Room, 1:30 P. M., Friday, April 30th. 
Comet C 1908 (Morehouse) D. W. Morehouse 
The Asteroid, 1906, W. E. Ellis B. Stauffer 
Further Studies of the Eastern Nebraska Flora Charles E. Bessey 
The Polyporace^e of Fayette, Iowa Guy West Wilson 
Some Parasitic Polyporaceae ..C. D. Learn 
An Anatomical Study of the Roots and Rhizomes of a Few Weeds. . . . 
L. H. Pammel and Estelle D. Fogel 
The More Important Factors Concerned in the Production of Plant 
Diseases L. H. Pammel and Charlotte M. King 
Plant Distribution in Iowa in Relation to Geologic Formations. . .B. Shimek 
The Sand-Dune Flora of Iowa B. Shimek 
The Flora of Iowa Rock Robert B. Wylie 
Notes on Spore Formation in Ulva Robert B. Wylie 
Slime Moulds of the Yosemite Thomas H. McBride 
Okoboji Laboratory (Short Talk) Thomas H. McBride 
Some Features of Iowa Ground Waters. II W. S. Hendrixson 
The Training of the Technical Chemist (read on invitation) . .J. S. Staudt 
The Influence of Copious Ingestion of Water (read on invitation).... 
Stella A. Hartzell 
The Estimation of Arsenic and Cobalt in Smaltite Nicholas Knight 
An Analysis of the Fruit of Viburnum Nudum Nicholas Knight 
The Action of Manure on a Certain Iowa Soil E. B. Y/atson 
Signiflcance of Thrust-Planes in the Great Basin Ranges . . Charles R. Keyes 
Orotaxial Correlation of Geologic Terranes and Diastrophism 
Charles R. Keyes 
Carbonic Column of the Rio Grande Region Charles R. Keyes 
A Hysteresis Curve D. W. Morehouse and Harry Woodrow 
The Googler Primary Cell Harry Woodrow 
On the Use of the Balance LeRoy D. Weld 
The Fifth and Seventh Cranial Nerves of Plethodon Glutinosus 
H. W. Norris 
Hydroids as Ornamental Plants C. C. Nutting 
Arterio-Sclerosis W. E. Sanders 
Birds of Polk County, Iowa Lester P. Fagen 
The Migration of Nervous Elements into the Dorsal and Ventral Nerve- 
Roots of Pig-Embryos (Introduced by Prof. Gilbert L. Houser) 
Albert Kuntz 
The Unios of the Muscatine County Loess B. Shimek 
Some Observations on the Embryology of Chironomus W. N. Craven 
