•vi Proceedings. [November 17th, igoj- 



Ordinary Meeting, November 17th, 1903. 



Professor H. B. Dixon, M.A., F.R.S., Vice-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 : — " On the Recent Geological 

 History of the Bergen District of Norway,*^ by H. W. Monckton 

 (8vo., 1903), presented by the author; ^^ Justus von Liebig nach 

 dem Leben gezeichnet,^' von G. F. Knapp (4to., Miinchen, 1903), 

 and " Ueber wissenschaftliche Wahrlieit" von K. A. v. Zittel 

 (4to., Miinchen, 1902), presented by the K. B. Akademie der 

 Wissenschaften zu Miinchen. 



Mr. Charles Leigh presented to the Society a framed 

 engraved portrait of Dr. John Dalton, drawn by J. Stephenson. 



Professor Lamb exhibited and described two photographs, 

 taken at the Isle of Man by Mr. Hiller, one of which showed 

 very clearly the interference between the direct and reflected 

 waves on the sea-coast. The points of intersection of the two 

 systems of waves were particularly well marked. 



Mr. Thomas Thorp, F.R.A.S., exhibited a small glass tube 

 containing a little radium bromide at the sealed end, and 

 terminating at the other in a bulb. The whole formed a 

 vacuum tube, and made a very convenient and portable 

 apparatus for showing in the dark the fluorescence of a barium, 

 platino cyanide screen in the presence of radium bromide. He 

 also stated that the bulb caused a charged electroscope to very 

 rapidly discharge. 



Messrs. R. S. Hutton, M.Sc, and J. E. Petavel described 

 some experimental work which they had undertaken in order to 

 study the effect of high gaseous pressures upon electric furnace 

 reactions. The investigation was being carried out in the Electro- 

 chemical Laboratory of the Manchester University. The 

 preliminary results only were given, progress having been 

 necessarily slow up to this time. The several dispositions of the 



