Record. xxiii 



April 1,1912: 



J. L. Van Ornum. — The Permeability of Concrete 



and Methods of Securing Impermeability. 

 G. 0. James. — The Application of the Relativity 

 Law of Gravitation to the Motion of the Peri- 

 helion of Mercury. 



(Published in Astronomical Journal, Vol. XXVII, 1912.) 



F. E. NiPHER. — Effect of a Disruptive Discharge 



Through a Fine Wire. 

 C. A. Waldo. — Multiplication Tables of Russian 



Peasants. 



April 15, 1912: 



A. S. Langsdorf. — Transient Electrical Phenomena. 

 C. H. Turner. — Results of Recent Experiments on 



the Homing of Ants. 

 A. E. BosTwicK. — Atomic Theories of Energy. 



(Published in The Monist, October, 1912.) 



Wm. H. Roever. — A Mechanism for Illustrating 

 Lines of Force. 



May 6, 1912 : 



J. F. Abbott. — The Water Boatmen, an Unexplored 

 Corner of the Insect World. 



C. M. Gill. — Recreation Studies in Estes Park, Col- 

 orado. 



Fred Hecker. — Microscopic Studies of Living Or- 

 ganisms and Their Growth Rate. 



May 20, 1912: 



A. S. Pearse. — Fiddler Crabs. 



(Published in Philippine Journal of Science, Vol. 7, No. 3, 

 1912.) 



Phil Rau. — The Life History of the Devil Horse 

 (Stagmomantis Carolina). 



(Published in Transactions of The Academy of Science of 

 St. Louis, Vol. XXII, No. 1, 1913.) 



June 3, 1912 : 



F. E. Nipher. — Electric Waves in Solid Conductors. 

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



Mammals. 

 J. L. Van Ornum. — The Effect of Fatigue Tests and 



of Moisture Upon the Elasticity of Concrete. 



