xxviii Trans. Acad. Sci. of St. Louis. 
FEBRUARY 6, 1905. 
President Adolf Alt in the chair; attendance nineteen. 
Mr. J. H. Kinealy delivered a lecture on ‘‘ Calorimeters 
for Determining the Heating Powers of Fuels.’’ With the 
aid of a series of lantern slides he gave a history and a de- 
scription of the various methods and apparatus used for this 
purpose during the past one hundred years. 
FEBRUARY 20, 1905. 
Prof. F. E. Nipher in the chair; attendance thirteen. 
Mr. G. Pauls read a short paper on the relations of human 
and plant life. | 
Prof. C. M. Woodward delivered a lecture on the ‘* Action 
of an Eccentric Weight on a Rolling Wheel.’’ He showed by 
a series of mathematical formulae that the eccentric weight 
of a locomotive wheel in motion, together with the centri- 
fugal force, when running ata high velocity of about sixty 
miles exerts an enormous pressure upon the track, which 
pressure is balanced by asimilar weight in the opposite spoke 
of the wheel acting as a lifting power. 
Marcu 6, 1905. 
President Adolf Alt in the chair; attendance fifteen. 
Mr. H. A. Huston, the lecturer of the evening, donated 
to the Academy a collection of the raw materials from which 
the products of the Stassfurt Industry are derived. 
Mr. H. A. Huston delivered a lecture on the ‘* Stassfurt 
Industry of Potash, Sulphate of Magnesia, Bromine, etc.,”’ 
illustrating with a series of lantern slides the geological 
formation, the method of mining the raw material, the 
technical apparatus and the shipping of the products. 
Marcu 20, 1905. 
President A..Alt in the chair; attendance fifteen. 
