18 Journal of the Mitchell Society [September 



A Bevieiv of the Fulgoridae of Eastern North America. Z. P. ]\Tet- 



CALF. 



Striations in Inorganic Solutions. C. M. Heck. 



A Parasite of the Mediterranean Flour Moth. J. E. Eckert. (Lan- 

 tern), 



Spore Discharge in Some Genera of Water Molds. J. N. Couch. 

 To appear in full in an early issue of this Journal. 



Laboratory Wo7'k in Elementary Genetics. C. 0. Eddy. 



The Echigo Oil Fields, Japan. Collier Cobb. 



Acoustics of Auditoriums. A. H. Patterson. 



A Review of High School Science Teaching. J. N. Couch. (Lan- 

 tern). 



Sand Dunes of Niigata. Collier Cobb. 



A New Species of Isoachlya. F. A. Grant. 



To appear in The Saprolcgniaceae, a volume by W. C. Coker, to be 

 published soon by The University of North Carolina Press. 



demonstration s 



Wild Flower Show. H. R. Totten and the class in Botany 2. 



Abnormal Frog Embryo (Hyla picheringii) with Developed Tail and 

 Exposed Yolk. H. V. Wilson. 



A Sponge (Phloeodictyon putridosum) with a Shell made up of a 

 Parasitic Calcareous Alga. H. V. Wilson. 



Striations in Inorganic Solutions. C. M. Heck. 



Laboratory Work in Elementary Genetics. C. O. Eddy. 



The following papers were presented to the Physics Section : 



How Einstein's Theory of Relativity Was Verified. Archibald 



Henderson. 



In this paper, for which forty-five minutes were allowed, the at- 

 tempt was made to put into simple terms a precis of the general ideas 



