Record. xix 



Mr. Albert Todd Terry and Mr. John Hopkins Terry, of 

 St. Louis, were elected to active membership. 



Two persons were proposed for active membership. 



February 20, 1899. 



President Engler in the chair, seventeen persons present. 



Mr. H. A. Hunicke delivered an informal lecture on the 

 new elements recently discovered in the atmosphere, giving 

 an account of the discovery of argon, helium, crypton, neon, 

 metargon, and xenon, and indicating the places in the peri- 

 odic system, as suggested by Ramsey, for all except crypton 

 and metargon, which as yet are too little known to make this 

 possible. 



One person was proposed for active membership. 



March 6, 1899. 



President Engler in the chair, nineteen persons present. 



Professor J. H. Kinealy described some experiments on 

 lifting water by compressed air, as is done by the Pohle air- 

 lift pump, and discussed the efficiency problems of the use of 

 apparatus of this description. 



Mr. E. H. Michel, Mr. J. E. Randall, and Mr. John S. 

 Thurman, all of St. Louis, were elected to active member- 

 ship. 



Two persons were proposed for active membership. 



March 20, 1899. 



President Engler in the chair, fifty-three persons present. 



The Council reported that the resignations of Dr. H. Kin- 

 ner and Professor C. R. Sanger had been accepted; that at 

 his request the name of Judge Franklin Ferriss had been 

 dropped from the roll of members, he having never qualified 

 as a member; and that the Academy had lost a member by 

 the death of Mr. W. S. Burroughs. 



Dr. T. J. J. See addressed the Academy on the temperature 

 and relative ages of the stars and nebulae, rejectintr the com- 



