434 
The Ohio Naturalist. 
[Vol. XV, No. 8, 
The complete scientific program follows: 
PRESIDENTIAL ADDRESS. 
Some Pioneers of Science in Ohio.Dr. T. C. Mendenhall 
LECTURE. 
The Foot and Mouth Disease.Dean D. S. White 
College of Veterinary Medicine, Ohio State University. 
PAPERS. 
Efficacy of Lightning Rods.J. Warren Smith 
Thunderbolt from Whitecliff Bay.Katherine Doris Sharp 
A Preliminary Survey of Plant Distribution in Ohio. 
John H. Schaffner 
Akron Fishbait Industry.Chas. P. Fox 
The Physiographic Provinces which meet in Ohio 
N. M. Fenneman 
Color and Coat Inheritance in Guinea Pigs.W. M. Barrows 
Note on a New Nematode Parasite of Cryptobranchus 
F. H. Krcckcr 
Prediction of Minimum Temperatures for Frost Protection 
J. Warren Smith 
Is a Dry Summer and Autumn Apt to be Followed by a Wet 
Winter With Possible Floods?.J. Warren Smith 
Comparative Rate of Growth of Certain Timber Trees 
William R. Lazenby 
Inheritance of Taillessness in the Cat 
W. M. Barrows and C. A. Reese 
The Cause of Milk Sickness and Trembles.E. L. Moseley 
Notes on Euglenoidina.L. B. Walton 
Recent Eruptions of Mount Lassen.Thos. M. Hills 
Glaciation in the High Sierras.Thos. M. Hills 
Inheritance of Weights in Tomatoes.Fred Perry 
The Municipal Care of Shade Trees.J. S. Houser 
Influence of Glaciation on Agriculture in Ohio. .Edgar W. Owen 
The Reflection of X-rays and Gamma Rays from Crystals. (In¬ 
troducing discussion.).S. M. J. Allen 
A Class Demonstration of the Peltier Effect.J. A. Culler 
Behavior of the Arc in a Longitudinal Magnetic Field 
R. F. Earhart 
Effect of Heat Treatment on the Physical Structure, Permeability, 
and Hysteresis of Steel.R. J. Webber 
The Electron Theory of Metallic Conduction. (Introducing 
discussion.).A. W. Smith 
The Effect of Changes in Water Resistance and Dielectrics on the 
Vibrations of a Lecher System.Geo. W. Gorrell 
Exhibit of Apparatus for Electric Waves: (1) Drude Apparatus 
for Refractive Index of Electric Waves. (2) A Wavemeter 
for Wireless Frequencies.A. D. Cole 
