Record. liii 



discharges of very high tension alternating currents, which 

 showed that by the latter certain invisible rays are produced, 

 which, like the Rontgen rays, are capable of passing through 

 opaque bodies, such as pitch, but differ in their refrangi- 

 bility by such media, and, so far as present experiments have 

 shown, in their inability to affect the photographic plate 

 during ordinary exposures. 



Mr. James Gurney, of St. Louis, was elected an active 

 member. 



February 24, 1896. 



President Gray in the chair, forty-five persons present. 



The President announced that this had been called as a 

 special meeting in commemoration of the services rendered 

 to science by four distinguished men who had died in the past 

 year, men who had contributed greatly to the advancement of 

 knowledge, and who, as it happened, represented four of the 

 great nations of the earth. Addresses on their work were 

 then read, as follows: — 



Hermann von Helmholtz, by Professor H. S. Pritchett. 



Louis Pasteur, by Dr. A. N. Ravold. 



James Dwight Dana, by Mr. Arthur Winslow. 



T. H. Huxley, by Dr. S. P. Budgett. 



March 2, 1896. 



President Gray in the chair, twenty-one persons present. 



Mr. F. W. Duenckel presented a comparison of the records 

 of the United States Meteorological Observatory, located at 

 the government building in the city, with the record for the 

 Forest Park Station, showing that the daily minimum aver- 

 aged decidedlv lower at the Forest Park Station than in the 

 city, while the wind averaged decidedly higher at the city 

 station. 



Professor E. A. Engler spoke on the summation of certain 

 series of numbers. 



March 16, 1896. 



Vice-President Engler in the chair, twelve persons present. 

 Professor William Trelease stated some of the results of 



