October 2gth, ipoy.] Proceedings. vii 



In recent letters to Nature, Boltwood has confirmed the 

 results of the writer, and has devised a satisfactory method of 

 separating the radium parent from actinium. He has shown 

 that this new body, which he proposes to call "ionium," gives 

 out o and /3 rays, and has the chemical properties of thorium. 



The Royal Society recently loaned the writer the actinium 

 residues from about a ton of pitchblende. These residues con- 

 tain the parent of radium, and experiments are in progress to 

 isolate and concentrate both the actinium and ionium in these 

 residues. 



The President announced that Dr. Joseph Larmor, Secretary 

 of the Royal Society and Lucasian Professor of Mathematics in 

 the University of Cambridge, had consented to deliver the 

 Wilde Lecture for 1908 on "The Physical Aspect of the Atomic 

 Theory." 



General Meeting, November 12th, 1907. 



Professor H. B. Dixon, M.A., F.R.S., President, in the Chair. 



Mr. John William Bews, M.A., B.Sc, Lecturer in Economic 

 Botany in the University of Manchester, was elected an ordinary 

 member of the Society, 



Ordinary Meeting, November 12th, 1907. 

 Professor H. B. Dixon, M.A., F.R.S., President, in the Chair. 



The thanks of the members were voted to the donors of the 

 books upon the table. The following were among the recent 

 donations to the Society's Library : — " De Berekefttng, de Bouw 

 en het Bedrijf van het Kabelnet d. Gemeente Amsterdam" Door 

 G. de Gelder (8vo., 's-Gravenhage, 1907), " Mathematische utid 



