xxii Trans. Acad. Sci. of St. Louis. 



EECORD. 



Fkom January 1 to December 31, 1912. 



The following list of papers were presented at the 

 meetings during this period: 



January 2, 1912 : 



A. S. Langsdorf. — Graphical Methods for Con- 

 structing the Characteristic Curves of Electric 

 Motors. 



January 15, 1912: 



A. E. EwiNG. — Sanninoidea exitiosa (Say) and San- 

 ninoidea opalescens (Hy. Edw.). Borers which 

 infest the peach tree root; examples of the in- 

 sects from the egg to the imago ; description of 

 the life history and the resulting tree destruc- 

 tion. 



February 5, 1912 : 



G. O. James. — Mechanical Flight. 



February 19, 1912 : 



C. H. Turner. — Experimental Study of Color Vision 

 and Pattern Vision of Bees. 



(Published in Biological Bulletin, Vols. XIX and XXI.) 



H. M. Whelpley. — Miniature Indian Baskets. 



March 4, 1912 : 



C. A. Todd. — A Problematical Geological Phenom- 

 enon in Colorado. 



H. T. A. Hus. — Inheritance in Capsella. 



F. E. Nipher. — Effect of a Sudden Draining of Neg- 

 ative Corpuscles from Matter. 



March 18, 1912 : 



E. J. Terry. — A Grove of Deformed Trees. 



C. A. Waldo. — The Problem of Coal Exhaustion. 



H. M. Whelpley. — Miniature Flint Arrows. 



