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



April 18, 1910: 



Frank Mesker. — China, and the Great Wall. 



May 2, 1910: 



Charles A. Todd. — The Preservation and Mounting 

 of Wet Preparations for Musenms. 



Francis E. Nipher. — The Nature of the Electric Dis- 

 charge. 



(Published in Transactions of The Academy of Science 

 of St. Louis, Vol. XIX, No. 4, 1910.) 



May 16, 1910: 



William Trelease. — The Geographical Distribution 

 of Agave in the West Indies, and its Probable 

 Mode of Introduction. 



June 6, 1910: 



Walter Edward McCourt. — The Unfolding of the 

 Map of the World. 



October 17, 1910: 



William Trelease. — The Smallest of the Century 

 Plants. 



(Published in Popular Science Monthly, December, 1910.) 



J. L. Van Ornum. — The Effect of the Presence of 

 Vegetable Mold on the Strength of Concrete and 

 Mortar. 



November 21, 1910: 



Julius Hurter. — The Poisonous Snakes of Missouri. 



December 5, 1910: 



Ulrich Harder. — Evolution with Eeference to the 

 Acquisition of the Erect Posture, its Disadvan- 

 tages and the Decline of Certain Faculties in 

 Man. 



December 19, 1910: 



Robert J. Wallace. — The Construction, Equipment 

 and Work of a Modern Observatory. 



