76 IOWA ACADEMY OF SCIENCE 
1902: Almy, Some Observations on the Action of Coherers when subjected to 
Direct Electro-Motive-Porce. 
1903: Begeman, A Convenient Voltaic Cell. 
Lorenz, Stereoscopic Projection in Natural Colors. 
Morrison^ New Method of Cohesion of Water and Adhesion of Mer- 
cury Apparatus. 
1905: Begeman, J. J. Thomson’s Theory of Matter. 
Lorenz, Three Color Projection. 
Page, A Laboratory Barometer. 
Tilton, The Storage Battery and Switch-board at Simpson College. 
1906: Almy, The Physical Laboratory at Iowa College. 
A Simple Demonstration of the Doppler Effect in Sound. 
The Effect of Pressure on Lines in the Spectrum of Iron. 
Begeman, Mutual Induction and Internal Resistance of a Voltaic Cell. 
Guthe, Electrical Standards. 
Morehouse, Photographic Accessories of the Drake Observatory. 
1907: Page, The Physical Science Laboratory of the State Normal School. 
1908: Begeman, Determination of the charge on an Electron, by Wilson’s 
Method, using Radium. Nucleation, according to Barus. 
Guthe, Some Peculiarities in the Elastic Properties of certain Substances. 
1909: Morehouse and Woodrow, The Hysteresis Loop. 
Smith, A. G., Evaporation from free Surface of Water. / 
Weld, Effect of Temperature Inequalities on the Balance. 
Woodrow, The Googler Primary Battery. 
1910: Stewart, Concerning a Study of Kerosene Oils by Physical Methods, 
Sieg, Some Recent Discoveries Concerning the Behavior of Platinum- 
Iridium Wires. 
1911: Almy, The Doppler Effect in Electrodeless Discharge. 
Clark, Use of a Ballistic Galvanometer and a Pendulum for Measuring 
rapidly fluctuating Resistances. 
Crum, Some Characteristics of Light-Negative Selenium. 
Ford, Illuminating Engineering — A New Profession. 
Sieg, On the Rate of Recovery of Elastic Properties of a Certain Wire. 
Weld, Some Remarks on the Solubility of Certain Salts in Water. 
In text-books: Nichols and Franklin’s “Elements of Physics” was published 
while Professor Franklin was at Ames. Begeman’s “Physics” has found a de- 
mand requiring several editions to be printed. Professor Spinney has fllled 
one of the “long felt wants” with his recently published “Text-Book of Physics” 
for engineering students; and the manuscript of Reed and Guthe’S “College 
Physics,” published last year, must have been worked up while Professor Guthe 
was at Iowa City. 
In addition: Professors Ftanklin and Spinney published a paper on the 
“Elastic Properties of Glass;” Professor Spinney presented a paper at a meet- 
ing of the A. A. A. S. on “The Analysis of Vowel Sounds,” and has published a 
number of papers on problems of Illumination and Illuminating Engineering, 
and a good deal of investigation has been done in his laboratory in the line of 
Applied Physics. Professor Guthe published several papers in the Physical 
Review while at the University and several members of the present staff are 
