1921] Golden Wedding Presentation 441 



WEEKLY EVENING MEETING, 



Friday, June 17, 1921. 



His Grace the Duke of Northumberland, C.B.E., M.Y.O., 



President, in the Chair. 



Sir J. J. Thomson, O.M. LL.D. D.Sc. F.R.S., Master of Trinity, 

 Honorary Professor of Natural Philosophy, R.I. 



Chemical Combination and the Structure of the Molecule. 



[No Abstract.] 



GOLDEN WEDDING PRESENTATION TO 

 SIR JAMES AND LADY DEWAR. 



After the Discourse the Chairman said : — 



Ladies and gentlemen, I have a very pleasing duty to perform 

 this evening. As you probably know, Sir James and Lady Dewar 

 are celebrating their golden wedding next August, and this, the 

 concluding lecture of the season, was felt to be the most suitable 

 occasion for presenting the gift which I now have the honour to 

 present from this Institution to Sir James and Lady Dewar in 

 recognition of the great regard, esteem and affection in which we all 

 hold them. I feel that it would be almost an impertinence on my 

 part to speak to such an assembly as this of the great services which 

 Sir James Dewar has rendered, not only to this Institution, but to 

 British science, and indeed to civilisation. His name is not only a 

 household word with all of us, but it is really no exaggeration to say 

 that every one of us utilises in some way or another the result of the 

 great discoveries which he has made during the last forty to fifty 

 years. 



But although it is unnecessary to speak to you of his services, I 

 think you will agree that it is, perhaps, fitting on this occasion that 

 we should make a brief review of the past forty-four years, during 

 which Sir James Dewar has been Fullerian Professor at this Institu- 

 tion, in order that we may remind ourselves of the very great 

 obligations which we owe him. It was in 1877, forty-four years 

 ago, that he came to this Institution, and directly afterwards he 

 turned his attention to the subject of the physiology of the eye, and 

 began, in conjunction with Professor Liveing, that long series of 



