xxiv Trans. Acad. Sci. of St. Louis. 



April 3, 1911 : 



Leo Loeb. — The Parthenogenetic Development of the 

 Ova in the Mammalian Ovary. 



(Published in Archiv fiir Entwicklungsmechanik, Bd. 

 XXXII, Nov. 21, 1911, and in Zeitschrift fiir Krebs- 

 forschung, Bd. XI, Sept. 2, 1911.) 



H. A. Wheeler. — Oil Fields in Illinois. 



(Published 1911.) 



Edmund A. Engler. — Fignrate Numbers. 



(Published in Transactions of The Academy of Science 

 of St. Louis, Vol. XX, No. 4, 1911.) 



April 17, 1911 : 



C. A. Waldo. — The London Tubes. 



May 1, 1911 : 



Thomas J. J. See. — Eecent Discoveries in Cosmog- 

 ony. 



(Published in Scientia, Milan, Jan., 1912.) 



May 15, 1911: 



Henri T. A. Hus. — The Origin of Species in Nature. 



(Published in American Naturalist, Vol. XLV, Nov., 1911.) 



June 5, 1911 : 



0. M. Woodward. — The Theory of an Air Propeller 

 with Haelicoidal Blades. 



(Published in Applied Mechanics, 1912.) 



George A. Lindsay. — The Annual Eainfall and Tem- 

 perature of the United States. 



October 16, 1911: 



Francis E. Nipher. — Electricity and Matter. 



November 6, 1911 : 



J. J. Kessler. — Interpolation Method of Oil Analysis. 



(Published in Journal of Industrial and Engineering 

 Chemistry, Feb., 1911.) 



