Abstract of History. xxix 



E. A. Hall. — Fixation of Atmospheric Nitrogen. 

 S. S. Knight. — Some Microscopic Observations upon 



the Segregation of Impurities in Carbon-Iron 



Alloys. 

 R. J. Teeky. — The Development of the Cranium in 



Mammals. 11. 



March 17, 1913 : 



E. G. Payne. — Social Effects of Some Eecent Child 



Labor Legislation in Missouri. 

 C. M. Gill. — A Possible Explanation of the 'In- 

 ferno' at Fern Lake near Estes Park, Colorado. 



F. E. NiPHEE.— The Effect of Wind on the Magnetic 



Needle. 



April 7, 1913 : 



G. 0. James. — How Worlds are Formed. 

 Julius Huktee. — Cobras. 



April 21, 1913 : 



B. M. DuGGAE. — The Significance of Color in Plants. 



C. A. Todd. — Observations on the Migratory Flight 



of a Butterfly. 

 E. A. Hall. — Preparation of Neutral Tri- Ammonium 

 Citrate. 



May 5, 1913 : 



M. E. Wilson. — The Geology of the Meramec High- 

 lands Eegion. 



C. A. Todd. — Further Observations on the Migra- 

 tory Flight of a Butterfly. 



May 19, 1913: 



Geo. T. Mooee. — Speculations on the Origin of Life. 



June 2, 1913 : 



Heemann von Scheenk. — Eecent Epidemic Appear- 

 ance of Termites in St. Louis Houses. 



H. M. Whelpey. — The Shrunken Human Heads of 

 Bolivia. 



