68 JOUKISTAL OF THE MiTCHELL SoCIETY {^AugUSt 



Electrical Conduction of Flowing Mercury — V. L. Chrisler, presented 

 by A. H. Patterson, 



Microscopic Demonstration of Protozoan Spores, Used as Proof of 

 Contamination of Food with Human Excrement — C. W. Stiles. 



Some Recent Developments in the Theory of X-Rays — C. W. Edwards. 



The Gyroscope and its Modern Applications (with a demonstration) — 

 A. H. Petterson. 



The Coggins Gold M(ine— J. H. Pratt. 



Geology in Relation to the Location of Highways in North Carolina — 

 Collier Cobb. 



The Corn Bill Bug— Z. P. Metcalf. 



A Peculiar Case of Freezing — R. N. Wilson. 



The Nitrogen Tungsten Lamp — Bert Cunningham. 



E. W. GUDGER. 



Secretary 



